How Much of the Earth Can You See at Once?

Описание

My shirt is from this quarter’s CURIOSITY BOX: http://www.curiositybox.com/
MY TWITTER: http://www.twitter.com/tweetsauce
MY INSTAGRAM: http://www.instagram.com/electricpants

Thanks to Mitchell for the jack-in-the-box! http://brainvenomstudio.com/

3Blue1Brown: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw

3Blue1Brown fractal dimension video: https://www.youtube.com/watch?v=gB9n2gHsHN4

Mathologer video: https://www.youtube.com/watch?v=qhbuKbxJsk8

Distance to horizon calculator: http://www.ringbell.co.uk/info/hdist.htm

Earth curvature calculator: http://earthcurvature.com/

US cross section: https://www.reddit.com/r/MapPorn/comments/22cco7/us_elevation_profile_from_la_to_nyc_oc_1139x442/

Scott Kelly ISS earth pic: https://twitter.com/stationcdrkelly/status/618407818962575360?lang=en

names of large numbers: https://en.wikipedia.org/wiki/Names_of_large_numbers

Earth’s surface fractal dimension: http://www.dtic.mil/dtic/tr/fulltext/u2/a129664.pdf

Improbable research pancake study: http://www.improbable.com/airchives/paperair/volume9/v9i3/kansas.html

State flatness paper: http://www.disruptivegeo.com/blog/wp-content/uploads/2014/08/FlatMap_GeographicalReview_DobsonCampbell_2013Nov.pdf

Mental floss article on flat states: http://mentalfloss.com/article/58976/kansas-really-flatter-pancake

Lake Islands: https://en.wikipedia.org/wiki/Lake_island

XKCD What If? bowling ball Earth: https://what-if.xkcd.com/46/

West Virginia map: https://store.usgs.gov/product/109169

Is Earth as smooth as a billiard ball? https://skeptics.stackexchange.com/questions/10763/is-earth-as-smooth-as-a-billiard-ball

WPA rules: http://wpapool.com/rule-regulations/

Billiard ball surface scan paper: http://billiards.colostate.edu/bd_articles/2013/june13.pdf

What state people think of as flat: http://americangeo.org/wp-content/uploads/2015/01/AGSGeographicKnowledgeValuesSurveyFinal.pdf

Roche limit:

https://en.wikipedia.org/wiki/Roche_limit
https://www.quora.com/Why-arent-we-affected-by-the-Roche-Limit-Earth-is-clearly-larger-than-us
https://www.quora.com/Does-the-Roche-limit-apply-to-our-human-launched-satellites-and-other-orbiting-bodies-of-Earth

Hey What’s That? http://www.heywhatsthat.com

Field of view: https://en.wikipedia.org/wiki/Field_of_view

Angular diameter: https://en.wikipedia.org/wiki/Angular_diameter

Spherical cap calculator: http://www.1728.org/sphere.htm

amount of sphere seen from distance calculator: http://www.neoprogrammics.com/spheres/visible_fraction_of_surface.php

seeing Earth as a disc: https://physics.stackexchange.com/questions/64253/distance-away-from-earth-to-see-it-as-a-full-disk

how high to see the curvature of Earth? https://earthscience.stackexchange.com/questions/7283/how-high-must-one-be-for-the-curvature-of-the-earth-to-be-visible-to-the-eye

Earth from moon pics: https://www.flickr.com/photos/projectapolloarchive/sets/72157658976934006/

Star magnitude calculator: http://www.mesacc.edu/~kev2077220/flash/magcalc.html

Star distances: https://www.reddit.com/r/askscience/comments/20eyvg/what_is_the_average_distance_of_the_stars_that_we/

list of stars with resolved images: https://en.wikipedia.org/wiki/List_of_stars_with_resolved_images

2d figures by me

3d animations by Eric Langlay https://www.youtube.com/user/ericdraven30

Music from Jake Chudnow: https://www.youtube.com/user/jakechudnow
and Audio Network: http://www.audionetwork.com/

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Is The 5-Second Rule True?

Is The 5-Second Rule True?

Watch me lift a car (and then drop it) with phone books! http://bit.ly/Tx6cd2 Vsauce video on "touch" and why bananas are radioactive: http://bit.ly/YfocQL Vsauce on THNKR (4-part interview with me!): http://bit.ly/Twsah2 http://www.twitter.com/tweetsauce http://www.facebook.com/vsaucegaming All music by http://www.youtube.com/JakeChudnow 5-second rule facts: http://www.snopes.com/food/tainted/dropped.asp http://science.howstuffworks.com/science-vs-myth/everyday-myths/five-second-rule.htm http://en.wikipedia.org/wiki/Five-second_rule Applied Microbiology: http://onlinelibrary.wiley.com/store/10.1111/j.1365-2672.2006.03171.x/asset/j.1365-2672.2006.03171.x.pdf?v=1&t=h9zjxcsg&s=ae4a166c50e80507642181594ab22a12dd7c7831 Jillian Clarke: http://www.howard.edu/newsroom/releases/2004/041001clarke.htm Mythbusters: http://dsc.discovery.com/tv-shows/mythbusters/videos/five-second-rule-minimyth.htm minutephysics on "touch": http://www.youtube.com/watch?v=BksyMWSygnc Electrons as waves: http://www.rhythmodynamics.com/Gabriel_LaFreniere/matter.htm Adhesion: http://www.coatingspromag.com/articles/the-bonds-that-bind.aspx http://en.wikipedia.org/wiki/Adhesive_surface_forces http://en.wikipedia.org/wiki/Quantum_mechanical_explanation_of_intermolecular_interactions http://books.google.co.uk/books?id=cuyaHsui1ZUC&printsec=frontcover#v=onepage&q&f=false Intermolecular Forces: http://www.chemguide.co.uk/atoms/bonding/vdw.html http://ww2.chemistry.gatech.edu/~lw26/structure/molecular_interactions/mol_int.html http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/waal.html#c1 Molecule speed (interactive): http://aspire.cosmic-ray.org/labs/gas_particles/ Molecular Dynamics: http://en.wikipedia.org/wiki/Molecular_dynamics#Short-range_interaction_algorithms Phone book friction: http://www.de-monstrare.nl/pdf/Phonebook%20friction.pdf Orders of Magnitude: http://en.wikipedia.org/wiki/Orders_of_magnitude_(numbers)#1030 Germ facts: http://etiquette.about.com/od/Smartphones/a/Cell-Phones-Are-Personal-Items.htm http://www.huffingtonpost.com/2012/10/18/bank-card-fecal-bacteria-contaminated-germs_n_1971609.html http://www.geeksugar.com/Computer-Mouse-Keyboard-Each-Have-Over-700-Germs-Per-Square-Inch-3023797 Oatmeal Cell Phone Germs QUIZ: http://theoatmeal.com/quiz/phone_germs/go The best way to clean your computer screen: http://www.yahelite.org/lol/screenclean.swf Produced by: http://www.youtube.com/funnycatvideos Directed by: http://www.youtube.com/user/jackhoward Cinematography: https://twitter.com/luffwoto

6 лет назад
What's the Longest Drivable Distance on Earth?

What's the Longest Drivable Distance on Earth?

Go learn things for free for two months with Skillshare: http://skl.sh/hai Follow Half as Interesting on Twitter: http://twitter.com/halfinteresting Check out my new podcast with Brian from Real Engineering: https://itunes.apple.com/us/podcast/showmakers/id1224583218?mt=2 (iTunes link) https://www.youtube.com/channel/UC_10vJJqf2ZK0lWrb5BXAPg (YouTube link) Check out my other channel: http://youtube.com/wendoverproductions

1 лет назад
This Moon Landing Hoax Video Claims NASA 'faked' Apollo 11 Mission [FULL VIDEO]

This Moon Landing Hoax Video Claims NASA 'faked' Apollo 11 Mission [FULL VIDEO]

Since the first televised landing, NASA‘s moon missions have been subject to intense scrutiny, and remain the focus of countless conspiracy theories today. Many claim that the American space agency faked its moon missions in order to showcase its dominance over Russia – and put an end to the space race. This video now aims to take a look at the decades-long debate, examining claims that some of the footage and pictures from Apollo 11 mission were doctored. Marcus Allen, UK publisher of Nexus Magazine, examines the anomalies surrounding the Moon landings. Does the evidence for these events stand up to scrutiny? Were the dangers of radiation really overcome? Were the extreme temperatures of space too great for humans to survive? Were the Moon rocks real? Were the photographs really taken on the Moon or during training exercises here on Earth? Surely the Russians would have ‘blown the whistle’ if they suspected wrong doing – or would they? This presentation helps explain why so many people now doubt the official story of the Moon landings. Special Feature from Glastonbury Symposium Archives, Recorded at Truth, Mysteries and New Frontiers [Glastonbury Symposium] http://www.glastonburysymposium.co.uk/ . Subscribe to UAMN TV for more new releases in 2017

2 лет назад
Moving Illusions

Moving Illusions

The newest Mind Blow on Vsauce2: https://www.youtube.com/watch?v=PkAIR5p9Ni8 LINKS AND SOURCES BELOW: FOLLOW MICHAEL STEVENS: http://www.twitter.com/tweetsauce music by http://www.youtube.com/Jakechudnow and http://www.audionetwork.com brusspup anamorphic illusions: http://www.youtube.com/watch?v=tBNHPk-Lnkk ANOMALOUS MOTION by Akiyoshi Kitaoka: http://www.ritsumei.ac.jp/~akitaoka/index-e.html http://www.psy.ritsumei.ac.jp/~akitaoka/motion12e.html "Out of Focus" by Akiyoshi Kitaoka: http://www.ritsumei.ac.jp/~akitaoka/plaidm2.jpg anomalous motion explanations: http://www.cs.unm.edu/~williams/cs591/explanation.html http://mathworld.wolfram.com/OuchiIllusion.html http://en.wikipedia.org/wiki/Illusory_motion http://www.livescience.com/4950-key-optical-illusions-discovered.html how to make YOUR OWN anomalous motion images: http://www.wikihow.com/Create-an-Anomalous-Motion-Illusion Animal Collective illusion cover: http://diffuser.fm/animal-collective-merriweather-post-pavilion-50/ "illusion" etymology: http://www.etymonline.com/index.php?term=illusion really great "game" etymology image: http://www.flickr.com/photos/ethanhein/2850602827/sizes/o/in/photostream/ dazzle paint: http://en.wikipedia.org/wiki/Dazzle_camouflage "Command And Control" book: http://www.amazon.co.uk/Command-Control-Eric-Schlosser/dp/1846141486 Disneyland forced perspective: http://disneyparks.disney.go.com/blog/2011/04/beast-castle-behind-the-scenes-with-walt-disney-imagineers/ Birds use forced perspective: http://blogs.discovermagazine.com/notrocketscience/2010/09/09/male-bowerbirds-create-forced-perspective-illusions-that-only-females-see/#.UqDhW2RDtCp Müller-Lyer Illusion and culture: http://blogs.smithsonianmag.com/smartnews/2013/03/are-optical-illusions-cultural/ http://web.mit.edu/allanmc/www/socialperception14.pdf anamorphic illusions on street: http://www.deceptology.com/2011/05/slow-down-or-youll-kill-that-flat-kid.html http://www.ebaumsworld.com/pictures/view/80516104/ anamorphic illusions STUART TRAY: http://www.bbc.co.uk/arts/yourpaintings/paintings/the-secret-portrait-of-prince-charles-edward-stuart-167681 http://www.westhighlandmuseum.org.uk/collections/the-jacobites/secret-portrait/ Titanic and recovered bodies: http://www.encyclopedia-titanica.org/titanic-victims/135/ Titanic and optical illusions: http://www.nytimes.com/interactive/2012/04/10/science/titanic.html?_r=0 http://www.smithsonianmag.com/science-nature/Did-the-Titanic-Sink-Because-of-an-Optical-Illusion.html?c=y&page=1&navigation=previous#IMAGES http://en.wikipedia.org/wiki/Fata_Morgana_(mirage) Tooth-drilling and optical illusions: http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077343 http://io9.com/an-optical-illusion-is-making-dentists-drill-holes-that-1459391735 The End of History illusion: http://www.wjh.harvard.edu/~dtg/Quoidbach%20et%20al%202013.pdf http://www.nytimes.com/2013/01/04/science/study-in-science-shows-end-of-history-illusion.html?_r=0 http://psychcentral.com/blog/archives/2013/01/10/we-underestimate-our-changes-the-end-of-history-illusion/ The illusion of control: http://onlinelibrary.wiley.com/doi/10.1348/096317903321208880/abstract a bunch of neat illusions: http://www.gla.ac.uk/schools/humanities/research/philosophyresearch/cspe/illusions/ Architectural illusions: http://weburbanist.com/2008/10/22/architectural-optical-illusions-distortions-designs/ http://en.wikipedia.org/wiki/Forced_perspective http://en.wikipedia.org/wiki/Perspective_distortion_(photography) Ames room: http://img6.joyreactor.com/pics/post/gif-mindfuck-Ames-room-958726.gif

5 лет назад
Why all world maps are wrong

Why all world maps are wrong

Making accurate world maps is mathematically impossible. Subscribe to our channel! http://goo.gl/0bsAjO Interact with projections: http://metrocosm.com/compare-map-projections.html Mercator tool: http://thetruesize.com/ Mike Bostock Map Transitions: http://bl.ocks.org/mbostock/3711652 Mercator Puzzle: http://hive.sewanee.edu/ldale/maps/10/06-LOCAL.html Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com Check out our full video catalog: http://goo.gl/IZONyE Follow Vox on Twitter: http://goo.gl/XFrZ5H Or on Facebook: http://goo.gl/U2g06o

2 лет назад
How Earth Moves

How Earth Moves

It’s here! Science stuff, mind-blowing stuff, Vsauce stuff, oh my!! THE CURIOSITY BOX: https://www.thecuriositybox.com/ Jake’s video about The Curiosity Box: https://www.youtube.com/watch?v=p91-GhjgeEU Minute Physics on why December days are the longest: https://www.youtube.com/watch?v=nZMMuv0Ltyo StandUpMaths on calendars and leap days: https://www.youtube.com/watch?v=qkt_wmRKYNQ Tom Scott on the Equation of Time: https://www.youtube.com/watch?v=d9Qnobvx_kM My video on what would happen if the Earth stopped spinning: https://www.youtube.com/watch?v=K0-GxoJ_Pcg GREAT visuals showing how Earth moves around the sun: https://www.youtube.com/watch?v=82p-DYgGFjI http://www.timeanddate.com/ George Washington’s birthday: https://www.archives.gov/legislative/features/washington/ real-time sub solar point location: http://rl.se/sub-solar-point Lahaina noon images from the Oahu Astrophotography club: https://www.facebook.com/OahuAstrophotoClub analemma: https://en.wikipedia.org/wiki/Analemma great solargraph and analemma images: http://analemma.pl/english-version interactive seasons and ecliptic simulator: http://astro.unl.edu/classaction/animations/coordsmotion/eclipticsimulator.html Nasa video of seasonal movement of Earth: https://svs.gsfc.nasa.gov/20063 Tropical year: https://en.wikipedia.org/wiki/Tropical_year Earth rotation specifics: https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=20196 How Earth moves through the universe: https://astrosociety.org/edu/publications/tnl/71/howfast.html http://www.slate.com/blogs/bad_astronomy/2013/03/04/vortex_motion_viral_video_showing_sun_s_motion_through_galaxy_is_wrong.html http://space.gizmodo.com/racing-while-standing-still-1558642922/1559622011 https://www.reddit.com/r/askscience/comments/1rhu7r/i_always_see_representations_of_the_solar_system minute physics on cab: https://www.youtube.com/watch?v=_mZQ-5-KYHw PBS spacetime on the cosmic microwave background: https://www.youtube.com/watch?v=3tCMd1ytvWg https://www.youtube.com/watch?v=wcBjibuHxEk CMB rest frame: http://physics.stackexchange.com/questions/25928/is-the-cmb-rest-frame-special-where-does-it-come-from https://www.reddit.com/r/AskPhysics/comments/2va4t6/does_no_absolute_reference_frame_contradict_the/ Wikipedia: https://en.wikipedia.org/wiki/Day https://en.wikipedia.org/wiki/Solar_time https://en.wikipedia.org/wiki/Sidereal_time https://en.wikipedia.org/wiki/Calendar https://en.wikipedia.org/wiki/Gregorian_calendar https://en.wikipedia.org/wiki/Calendar_reform https://en.wikipedia.org/wiki/Day_length_fluctuations https://en.wikipedia.org/wiki/Cosmic_microwave_background wikicommons images: https://en.wikipedia.org/wiki/Sundial#/media/File:Kew_Gardens_0502.JPG https://en.wikipedia.org/wiki/File:CathedralofLearningLawinWinter.jpg https://en.wikipedia.org/wiki/Miami_Beach,_Florida#/media/File:South_Beach_20080315.jpg To explore space, I highly recommend these: http://www.shatters.net/celestia/ http://en.spaceengine.org/ music by http://www.youtube.com/jakechudnow and http://www.audionetwork.com Awesome 3D graphics by Eric Langlay: https://www.youtube.com/user/ericdraven30 Lame 2D stuff by me.

3 лет назад
What's The Brightest Thing In the Universe?

What's The Brightest Thing In the Universe?

Follow Michael Stevens for neat stuff: http://www.twitter.com/tweetsauce SOURCES BELOW music by http://www.youtube.com/JakeChudnow and http://www.audionetwork.com SixtySymbols video on new black hole theory: http://www.youtube.com/watch?v=RXTGInIbD_Q "How Hot Can it Get?" Vsauce video: http://www.youtube.com/watch?v=4fuHzC9aTik "What Will We Miss?" Vsauce video: http://www.youtube.com/watch?v=7uiv6tKtoKg Taijitu: http://en.wikipedia.org/wiki/Taijitu Yin Yang blackhole art (made by https://twitter.com/guylar ): http://imgur.com/IpD5L4l Roman 'Yin Yang': http://en.wikipedia.org/wiki/Notitia_Dignitatum Magnitude: http://www.1728.org/magntudj.htm http://zebu.uoregon.edu/~soper/Light/luminosity.html http://evildrganymede.net/rpg/world/magnitudes.pdf http://en.wikipedia.org/wiki/Magnitude_(astronomy) http://en.wikipedia.org/wiki/Extinction_(astronomy) http://en.wikipedia.org/wiki/Luminosity http://space.about.com/od/astronomydictionary/g/What-Is-Luminosity.htm http://en.wikipedia.org/wiki/Apparent_magnitude\ http://en.wikipedia.org/wiki/Absolute_magnitude Sun and lightbulb: http://bit.ly/1lxottV http://lumennow.org/lumens-vs-watts/ R136a1: http://www.youtube.com/watch?v=rYnTqI3xGkg http://en.wikipedia.org/wiki/R136a1 most luminous stars: http://en.wikipedia.org/wiki/List_of_most_luminous_stars gamma ray bursts: http://www.nasa.gov/topics/universe/features/shocking-burst.html#.Uu_ECmR_uRt http://en.wikipedia.org/wiki/Gamma-ray_burst Dark Matter: http://www.annualreviews.org/doi/abs/10.1146/annurev.aa.25.090187.002233 http://en.wikipedia.org/wiki/Dark_matter Accretion Disk: http://svs.gsfc.nasa.gov/vis/a010000/a010100/a010139/ http://svs.gsfc.nasa.gov/vis/a010000/a011100/a011162/index.html http://svs.gsfc.nasa.gov/vis/a010000/a010800/a010807/index.html http://svs.gsfc.nasa.gov/vis/a010000/a011100/a011110/index.html http://imgur.com/XyvTD http://en.wikipedia.org/wiki/Accretion_disc http://www.superbwallpapers.com/fantasy/black-hole-14517/ Jets: http://en.wikipedia.org/wiki/Relativistic_jet Quasars: http://hubblesite.org/newscenter/archive/releases/1996/25/image/a/ http://chandra.harvard.edu/photo/2002/1127/index.html http://www.sciencedaily.com/releases/2013/07/130724200605.htm http://arstechnica.com/science/2012/12/ancient-quasar-imaged-when-the-universe-lacked-heavy-metal/ http://hubblesite.org/newscenter/archive/releases/2003/03/ http://www.space.com/17262-quasar-definition.html http://en.wikipedia.org/wiki/3C_273 http://en.wikipedia.org/wiki/Blazar Most luminous BLAZAR: http://www.caha.es/the-most-luminous-quasar-state-ever-observed.html ACTIVE GALACTIC NUCLEI: http://en.wikipedia.org/wiki/Active_galaxy Neil Degrasse Tyson book: http://www.amazon.co.uk/Death-Black-Hole-Cosmic-Quandaries/dp/0393330168 Thierry Cohen art: http://www.danzigergallery.com/artists/thierry-cohen light pollution: http://physics.fau.edu/observatory/lightpol-astro.html http://www.lightpollution.it/dmsp/artbri.html http://eoimages.gsfc.nasa.gov/ve/1438/earth_lights.gif LA blackout: http://www.pbs.org/seeinginthedark/astronomy-topics/light-pollution.html

5 лет назад
What Does Earth Look Like?

What Does Earth Look Like?

Follow Michael Stevens: http://www.twitter.com/tweetsauce EXTRA INFO & LINKS BELOW! Dr. Julian Bayliss' rainforest story: http://youtu.be/mni8mSS4KDU Cool video from CGPGrey: "How Many Countries Are There?" http://youtu.be/4AivEQmfPpk upside-down map: http://paulmencke.nl.dualdev.com/wp-content/uploads/2010/10/Upside-down-World-Map.jpg INTERACTIVE projection site: http://www.jasondavies.com/maps/transition/ Chromoscope: http://www.chromoscope.net/ Mercator Puzzle: https://gmaps-samples.googlecode.com/svn/trunk/poly/puzzledrag.html xkcd on maps: http://xkcd.com/977/ Earth "live": http://aa.usno.navy.mil/imagery/earth/live interactive gnomonic: http://bl.ocks.org/mbostock/3795048 West Wing MAPS clip: http://www.youtube.com/watch?v=n8zBC2dvERM Earth from Mars: http://astrobob.areavoices.com/2012/08/10/what-does-earth-look-like-from-mars/ Earth from Saturn: http://saturn.jpl.nasa.gov/news/newsreleases/newsrelease20130722/ "look" etymology: http://www.etymonline.com/index.php?term=look wave on a string simulation: http://phet.colorado.edu/en/simulation/wave-on-a-string Hi-res electromagnetic spectrum: http://www.zulyzami.com/dl16?display Earth under different light: http://orbitingfrog.com/2008/06/25/earth-and-friends-in-multiple-wavelengths/ Moon's shadow on Earth: http://www.slate.com/blogs/bad_astronomy/2013/11/04/solar_eclipse_november_solar_eclipse_pictures_and_videos.html Bad Astronomer on twitter: https://twitter.com/BadAstronomer Africa compared to big countries: http://cdn.twentytwowords.com/wp-content/uploads/africa.jpg Map projection info: http://usersguidetotheuniverse.com/?p=1734 http://nationalatlas.gov/articles/mapping/a_projections.html http://www.radicalcartography.net/?projectionref http://www.geo.hunter.cuny.edu/~jochen/gtech201/lectures/lec6concepts/map%20coordinate%20systems/how%20to%20choose%20a%20projection.htm http://education.nationalgeographic.co.uk/education/media/selecting-map-projection/?ar_a=1 http://www.colorado.edu/geography/gcraft/notes/mapproj/mapproj.html http://kartoweb.itc.nl/geometrics/map%20projections/mappro.html http://www.giss.nasa.gov/tools/gprojector/help/projections.html What we used to think Earth looked like from space: http://blogs.smithsonianmag.com/smartnews/2013/09/heres-what-we-thought-earth-would-look-like-from-space/ Earth is not a perfect sphere: http://www.scientificamerican.com/article.cfm?id=earth-is-not-round

5 лет назад
The Napkin Ring Problem

The Napkin Ring Problem

Brain Candy Live FALL TOUR: http://www.braincandylive.com/tickets The Curiosity Box: https://www.curiositybox.com/ LINKS TO LEARN MORE BELOW! my twitter: http://www.twitter.com/tweetsauce Adam and I (but mainly Adam) making a kendama: https://www.youtube.com/watch?v=i8GD33DsRw8 Orange Oil: https://en.wikipedia.org/wiki/Orange_oil Napkin Ring Problem: https://en.wikipedia.org/wiki/Napkin_ring_problem Cavalieri's Principle: https://schoolyourself.org/learn/geometry/cavalieri-3d https://en.wikipedia.org/wiki/Cavalieri%27s_principle http://www.cut-the-knot.org/Curriculum/Calculus/Cavalieri.shtml BIG THANKS: Eric Langlay stayed up all night with me so that this video could come out today. MUCH LOVE https://www.youtube.com/user/ericdraven30 Grant from 3Blue1Brown helped me wrap my head around this topic: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw music by Jake Chudnow: https://www.youtube.com/user/jakechudnow and via AudioNetwork: https://www.audionetwork.com

2 лет назад
Yes, Apollo Flew Through the Van Allen Belts Going to the Moon

Yes, Apollo Flew Through the Van Allen Belts Going to the Moon

No, the van Allen radiation belts weren't deal breakers for the Apollo astronauts. They really did go to the Moon. Want weekly Vintage Space ? Don't forget to SUBSCRIBE! https://www.youtube.com/channel/UCw95T_TgbGHhTml4xZ9yIqg The Apollo Experience Report on Radiation is here, if you're curious: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730010172.pdf There's more about rockoons here:https://history.nasa.gov/SP-4401/ch4.htm Also, thanks to Doctor Dad (as in my Dad) for helping me get my head around how annoying it is that radiation is measured in so many ways and coming up with the CT scan as a relatable reference point! ***And more even older space in my book, BREAKING THE CHAINS OF GRAVITY! You can order your copy on Amazon: bit.ly/astbtcog Or get a signed hardcover edition on my website! http://www.amyshirateitel.com/store.html - IT'S BACK ONLINE! :) (But orders are slow for the moment - waiting for books from my publisher!) My blog archives has lots of awesome olde timey space, too (and I'm looking for a new home for it, too!): http://www.popsci.com/blog-network/vintage-space I've also got a PATREON PAGE! If you're a fan of Vintage Space, please consider becoming a patron! I've set up a Patreon account so I can raise funds to buy the gear I'll need to make an awesome podcast and also work with professionals to make better content all around. Any help is so hugely appreciated. https://www.patreon.com/amyshirateitel Connect on Facebook: https://www.facebook.com/amyshirateitel/ Google+: https://plus.google.com/u/0/+AmyShiraTeitel/posts Instagram: https://www.instagram.com/astvintagespace/ Twitter: https://twitter.com/astVintageSpace

2 лет назад
What Is The Resolution Of The Eye?

What Is The Resolution Of The Eye?

Follow me: http://www.twitter.com/tweetsauce SOURCES BELOW: Hanu Dixit music: https://www.youtube.com/user/HanuDixit0003 Vsauce video about the FRAME RATE of the eye: https://www.youtube.com/watch?v=buSaywCF6E8 music from http://www.youtube.com/jakechudnow and http://www.audionetwork.com Feature Film numbers [PDF]: http://www.uis.unesco.org/culture/Documents/average-film-production-2009.xls My instagram: http://instagram.com/electricpants Carlton Bale resolution graphs: http://carltonbale.com/1080p-does-matter/ resolution links: http://www.luminous-landscape.com/tutorials/understanding-series/res-demyst.shtml http://www.cambridgeincolour.com/tutorials/cameras-vs-human-eye.htm http://mindyourdecisions.com/blog/2011/11/04/whats-the-best-seat-in-a-movie-theater/#.UxS3ifR_sYz http://1.bp.blogspot.com/-wrmbMQpXdls/UK0bV-z0ARI/AAAAAAAAED8/MdyUCdQBNhk/s1600/Bayer+Notebook.jpg http://www.digital-photo-secrets.com/tip/333/do-more-megapixels-mean-better-photo-quality/ http://www.techradar.com/news/photography-video-capture/cameras/camera-testing-resolution-charts-explained-1027585 http://www.digital-photo-secrets.com/tip/333/do-more-megapixels-mean-better-photo-quality/ Dali Painting: http://www.newpaltz.edu/news/images/hi_res/1995.011.007%20Dali%20Hi.jpg xkcd comic: http://xkcd.com/1080/ eye chart download: http://eyetestnow.com/images/snellen_block_letter_eye_chart_eye_exam_test.pdf neon color spreading: http://www.blelb.com/english/blelbspots/spot05/expspot05_en.htm Roger N. Clark calculation: http://www.clarkvision.com/imagedetail/eye-resolution.html Bad Astronomer retina display article: http://www.slate.com/blogs/bad_astronomy/2010/06/10/resolving_the_iphone_resolution.html CINEMAINA: http://www.imdb.com/title/tt0281724/?ref_=ttmd_md_nm Where's the best seat in a movie theater? http://mindyourdecisions.com/blog/2011/11/04/whats-the-best-seat-in-a-movie-theater/#.Ux8HQGR_ti_ "Endings Without Endings": http://www.nytimes.com/2007/06/17/weekinreview/17mcgr.html?_r=0 Tamara Shopsin illustrations: http://tamarashopsin.com/

5 лет назад
What Would Happen If All Ice On Earth Melted?

What Would Happen If All Ice On Earth Melted?

What Would Happen If All Ice On Earth Melted? ► Subscribe: https://goo.gl/r5jd1F Many people have wondered what would happen if all the glacial ice on the planet melted. Some believe that it would be a water world with no land in sight, while others think that could never happen. But the Earth is changing in more ways than you might think on its own. Many might wonder how much of the Earth’s current global warming trend is affected by humans. Regardless of who is to blame, whether the planet is just going through a natural phase in its evolution, or if we are responsible, the evidence shows that the planet is getting warmer and warmer every year. But just how much of the planet could end up covered in water if all the glacial ice melted? The Arctic isn’t the same as it was today as it was, say… 100 years ago. Temperatures there have been rising at twice the normal rate which has been sparking some very alarming changes unlike anything seen in recorded history. 87% OF Antarctica Peninsula Glaciers have melted since 1945. Now the regions sea ice is declining by 13% percent each decade. Scientific predictions that foresaw an ice-free Arctic Ocean during the summer between 2040 and 2050 may come to pass even sooner than we thought. A lot of people will think ‘well that’s no big deal… just get everyone to move to higher ground’. Sounds like a simple solution. However, aside from the fact that billions of people would be displaced, there would be more to worry about now that all the Arctic ice has melted. What is not commonly known is that the Earths’ poles not only get less direct sunlight than lower latitudes, but the sea ice is white, and therefore reflects most of the sunlight that hits it back out into space. That reflectivity called ‘albedo’ helps keep the poles cold and limits the heat absorption from the Sun. But that’s not all. Scientists have known for a long time that the Arctic tundra and marine sediments contain large frozen deposits of methane gas which, if released into the atmosphere, will increase greenhouse gases. So as the Arctic Sea ice melts, this source of methane will increase. Think runaway greenhouse effect which likely helped destroy the atmosphere on Mars along with the solar winds that stripped the planet of its atmosphere. But that’s not all. During this time there could be massive Earthquakes if the ice melted fast enough. One of the more uncommonly known things is that all that ice has some serious weight and suppression to it, and it has been holding down the Earth, and global warming has already bled the frigid continent of about 2.7 trillion tons of ice with over half those losses occurring in the last 5 years. Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse effect… warming that results when the atmosphere traps heat radiating from Earth toward space. Some of the things you can do are to buy anything reusable and be conscious of garbage and waste and try to recycle everything. Saving gas by walking more or taking the bus can help, as well as planting trees. But it takes more than just a handful of people to make a change, it takes everyone to make an impact. Perhaps humanity will embrace this global threat on our planet and governments will act fast enough to possibly reverse the damage. And for those people who procrastinate, the time for action is now…because we just may have an ally in our own Sun… We hope you enjoyed the video. Do you have an idea on how we could stop global warming? Let us know in the comments. If you enjoyed watching this video, then make sure to like, subscribe, and turn on notifications so you’ll be the first to know when a new episode arrives. Thank you for watching!

2 месяцев назад
The Moon Terminator Illusion

The Moon Terminator Illusion

http://www.twitter.com/tweetsauce http://instagram.com/electricpants Sources and sites to learn more below!!! dolly zoom effect: http://filmmakeriq.com/lessons/introduction-to-the-dolly-zoom/ visual angle: http://en.wikipedia.org/wiki/Angular_diameter https://xkcd.com/1276/ http://en.wikipedia.org/wiki/Visual_angle http://astronomy.swin.edu.au/cosmos/A/Angular+Diameter great visual angle / angular diameter chart: http://upload.wikimedia.org/wikipedia/commons/f/f8/Comparison_angular_diameter_solar_system.svg moon terminator illusion resources: rogers and olga naumenko (2014): http://www.perceptionweb.com/abstract.cgi?id=v1410275 moon tile illusion [PDF]: http://www.seas.upenn.edu/~amyers/MoonPaper20June.pdf http://www.upenn.edu/emeritus/essays/MyersMoon.html http://www.astropix.com/HTML/L_STORY/MOONILL.HTM http://cosmoquest.org/forum/showthread.php?39035-Why-does-the-moon-s-terminator-not-appear-orthogonal-to-the-direction-of-the-sun the (more famous) moon illusion: http://mrflip.com/teach/lessons/moonsize/ http://en.wikipedia.org/wiki/Moon_illusion cylindrical perspective animation: http://chrisjones.id.au/MoonIllusion/ graphical perspective: http://en.wikipedia.org/wiki/Perspective_(graphical) https://agilewarrior.wordpress.com/2014/03/16/upside-down-drawing-an-exercise-to-reduce-mental-conflict/ optics of perspective: http://www.joshuanava.biz/perspective/introduction-1.html http://design.tutsplus.com/articles/live-perspective-a-new-approach-to-depth-in-drawing--cms-22100 http://www.handprint.com/HP/WCL/perspect1.html http://homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/OWENS/LECT1/node2.html keystone effect: http://en.wikipedia.org/wiki/Keystone_effect subjective constancy: http://en.wikipedia.org/wiki/Subjective_constancy crepuscular rays: http://www.badastronomy.com/mad/2000/sunbeams.html http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/opt/air/crp.rxml http://en.wikipedia.org/wiki/Crepuscular_rays#/media/File:Crepuscular_Rays,_India.JPG lunar phase interactive: http://astro.unl.edu/naap/lps/animations/moonPhasesHorizonDiagram.html parallax: http://en.wikipedia.org/wiki/Parallax#/media/File:Parallax.gif car illusion: http://www.moillusions.com/these-3-cars-are-same-in-size/ star field illusion: https://richardwiseman.wordpress.com/2011/09/08/most-amazing-illusion-ever/ hallway illusion: http://i.imgur.com/ty6PM.gif Euclid’s Optics: [PDF] http://www.math.cornell.edu/~web1600/Terrell_OpticsOfEuclid.pdf art resources: http://www.nettonet.org/Nettonet/101%20Painting/Studies/perspectivism.htm http://netfuture.org/fdnc/ch22.html http://www.reddit.com/r/AskHistorians/comments/1hlox1/why_are_medieval_paintings_so_crappy/ http://www.reddit.com/r/AskHistorians/comments/1kshhk/why_did_ancient_civilizations_never_produce_any/ http://www.reddit.com/r/AskHistorians/comments/1jus85/why_did_realistic_art_only_take_off_in_the_west/ http://www.reddit.com/r/AskHistorians/comments/1d442w/why_was_human_anatomy_poorly_drawn_in_ancient/ http://www.reddit.com/r/AskHistorians/comments/1ceool/why_couldnt_people_draw_realistically_in_the/ http://www.reddit.com/r/AskHistorians/comments/1dz7fr/why_arent_ancientmedieval_paintings_three/ http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0049786 http://www.reddit.com/r/askscience/comments/13zsf5/did_artistic_sense_evolve_in_humans/ http://www.zoharworks.com/artandoptics/papers/tyler_fs.html other geometric illusions: http://en.wikipedia.org/wiki/Geometrical-optical_illusions MUSIC FROM: http://www.youtube.com/JakeChudnow and http://www.audionetwork.com

4 лет назад
What Is The Speed of Dark?

What Is The Speed of Dark?

twitter: http://www.twitter.com/tweetsauce instagram: http://www.instagram.com/electricpants facebook: http://www.facebook.com/VsauceGaming SOURCES BELOW: this is the video where I talk about THE SPEED OF PUSH: https://www.youtube.com/watch?v=Do1lm9IevYE Big thanks to Martin Archer for help with this episode: http://www.martinarcher.co.uk/ And thanks to Guy Larsen for his shadow magic: https://twitter.com/guylar music by http://www.YouTube.com/JakeChudnow and http://www.audionetwork.com shadows faster than light: http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/FTL.html#3 http://physics.stackexchange.com/questions/63434/could-the-shadow-move-with-faster-than-light-speed http://www.madsci.org/posts/archives/2000-02/950834634.Ph.q.html making the moon brighter: http://what-if.xkcd.com/13/ sunset and earth’s shadow and belt of venus in single pics: http://apod.nasa.gov/apod/ap131024.html http://apod.nasa.gov/apod/ap100729.html amounts of evening-types in a city: http://weatherspark.com/averages/33125/Honolulu-Hawaii-United-States superluminal scissors: http://math.ucr.edu/home/baez/physics/Relativity/SR/scissors.html http://boards.straightdope.com/sdmb/archive/index.php/t-69757.html wave animations: http://www.ablongman.com/mullin/AnimationPages/FigsI-19&20.html http://www.acs.psu.edu/drussell/Demos/SWR/SWR.html http://resource.isvr.soton.ac.uk/spcg/tutorial/tutorial/Tutorial_files/Web-inter-superp.htm phase velocity vs. group velocity: http://resource.isvr.soton.ac.uk/spcg/tutorial/tutorial/Tutorial_files/Web-further-dispersive.htm faster than light dark patches: http://www.askamathematician.com/2013/02/q-is-darkness-a-wave-the-way-light-is-a-wave-what-is-the-speed-of-dark/ http://www.physicsclassroom.com/class/light/Lesson-3/The-Path-Difference make a light interference pattern at home: http://www.exploratorium.edu/snacks/diffraction/ http://www.instructables.com/id/How-to-perform-Interference-and-Diffranction-at-Ho/ the speed of ignorance: http://www.brainpickings.org/index.php/2012/04/02/stuart-firestein-ignorance-science/ http://philosophicalfallibilism.blogspot.com/2009_03_20_archive.html http://kk.org/thetechnium/2008/10/the-expansion-o/ http://louisecharente.wordpress.com/2013/10/24/the-discovery-of-ignorance/ Dunning-Kruger: http://www.huffingtonpost.com/david-macaray/the-dunningkruger-effect_b_4476166.html http://en.wikipedia.org/wiki/McArthur_Wheeler “animalcules”: http://www.leben.us/index.php/component/content/article/59-volume-3-issue-4/236-antoni-van-leeuwenhoeks-amazing-little-animalcules

5 лет назад
How Microwaving Grapes Makes Plasma

How Microwaving Grapes Makes Plasma

A bisected grape in the microwave makes plasma. But how does it work? A grape is the right size and refractive index to trap microwaves inside it. When you place two (or two halves) close together the fields interact with each other creating a maximum of electromagnetic energy where they touch. This creates heating, sparks, and plasma, which is further fed with energy directly by the microwaves. Huge thanks to Hamza Khattak, Prof. Pablo Bianucci and Prof. Aaron Slepkov (unavailable for the call) for chatting to me and helping me understand the physics of this cool phenomenon. Linking plasma formation in grapes to microwave resonances of aqueous dimers https://www.pnas.org/cgi/doi/10.1073/pnas.1818350116 Special thanks to Patreon supporters: Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd Thanks also to Steve Bosi, my original plasma collaborator. Animations by Alan Chamberlain Music from http://epidemicsound.com "Seaweed"

1 дней назад
How To Count Past Infinity

How To Count Past Infinity

my twitter: @tweetsauce my instagram: electricpants Sources and links to learn more below! I’m very grateful to mathematician Hugh Woodin, Professor of Philosophy and Mathematics at Harvard, for taking the time on multiple occasions to discuss this topic with me and help me wrap my (finite) head around it. I’m also grateful to David Eisenbud, the Director of the Mathematical Sciences Research Institute (MSRI) and professor of mathematics at the University of California, Berkeley, for his help and for connecting me with Hugh Woodin. And of course, big thanks to Brady Haran who created the “mile of pi” seen in this video and connected me with all these mathematicians in the first place. His channel, Numberphile, is superb: https://www.youtube.com/user/numberphile BOOKS related to these topics that I used: “The Outer Limits of Reason” by Noson S. Yanofsky: http://amzn.com/0262019353 “Infinity and The Mind” by Rudy Rucker: http://amzn.com/0691121273 “Roads to Infinity” by John C. Stilwell: http://amzn.com/1568814666 “More Precisely: The Math You Need to Do Philosophy” by Eric Steinhart: http://amzn.com/1551119099 “Satan, Cantor and Infinity: Mind-Boggling Puzzles” by Raymond M. Smullyan: http://amzn.com/0486470369 classic book that helps introduce concept of axioms: “Introduction to the Foundations of Mathematics” by Raymond L. Wilder: http://amzn.com/0486488209 Hugh Woodin speaking about infinity at the World Science Festival: https://youtu.be/KDCJZ81PwVM?t=29m45s Names of large (finite) numbers: https://en.wikipedia.org/wiki/Names_of_large_numbers Geoglyphs: The biggest number: https://goo.gl/maps/7GWcpnzo7iG2 Fovant badges: https://en.wikipedia.org/wiki/Fovant_Badges Battalion Park: https://en.wikipedia.org/wiki/Battalion_Park A mile of pi [VIDEO]: https://www.youtube.com/watch?v=0r3cEKZiLmg Wikipedia’s great visualization of ordinals out to omega^omega: https://en.wikipedia.org/wiki/File:Omega-exp-omega-labeled.svg as seen on: https://en.wikipedia.org/wiki/Ordinal_number this is also a good page about ordinals: http://math.wikia.com/wiki/Ordinal_Number also: http://www.cut-the-knot.org/WhatIs/Infinity/Ordinals.shtml and: https://en.wikipedia.org/wiki/Order_type and https://en.wikipedia.org/wiki/Well-order Axioms: https://en.wikipedia.org/wiki/Axiom https://www.reddit.com/r/askscience/comments/30xokb/have_there_been_axioms_that_later_have_been/ http://philosophy.stackexchange.com/questions/5922/what-is-the-difference-between-dogma-and-an-axiom http://www.cs.umd.edu/~gasarch/BLOGPAPERS/belaxioms1.pdf http://www.cs.umd.edu/~gasarch/BLOGPAPERS/belaxioms2.pdf THE UNREASONABLE EFFECTIVENSS OF MATHEMATICS IN THE NATURAL SCIENCES [PDF]: http://www.maths.ed.ac.uk/~aar/papers/wigner.pdf https://en.wikipedia.org/wiki/The_Unreasonable_Effectiveness_of_Mathematics_in_the_Natural_Sciences Large Cardinal game based on 2048: http://cantorontheshore.blogspot.it/2014/10/one-reinhardt-and-counting.html Other good resources: http://quibb.blogspot.com/2012/01/infinity-first-transfinite-cardinal.html http://plato.stanford.edu/entries/set-theory/ http://cantorsattic.info/Cantor%27s_Attic http://cantorontheshore.blogspot.co.at/2014/09/artemis-fowl-and-large-cardinals_22.html http://isomorphism.es/post/10782081422/what-comes-after-infinity-transfinite-arithmetic-and-ord https://lukepalmer.wordpress.com/2007/06/14/the-lesser-of-infinitely-many-evils/ MUSIC BY: http://www.youtube.com/JakeChudnow http://www.audionetwork.com

3 лет назад
Darker Than Vantablack—Absorbs 99.9923% of Light

Darker Than Vantablack—Absorbs 99.9923% of Light

Get your Action Lab Box Now! https://www.theactionlab.com/ I made something blacker than Vantablack! I show you what it looks like when you shine the world's brightest flashlight on it and also a super-bright blue laser! Then I talk about blackbody radiation and how perfect blackbodies are perfect absorbers and perfect emitters. Follow me on Twitter: https://twitter.com/theactionlabman Facebook: https://www.facebook.com/theactionlabrat WARNING: If you use the information from this video for your own projects then you assume complete responsibility for the results. My Other Channel: https://www.youtube.com/channel/UCA19mAJURyYHbJzhfpqhpCA For more awesome videos checkout: Amazing experiment actually makes black fire https://youtu.be/5ZNNDA2WUSU Crushing My Own Hand In a Hydraulic Press—Crazy Experiment on My Brain https://youtu.be/AgN-YTdPl3s What Does a 4D Ball Look Like in Real Life? Amazing Experiment Shows Spherical Version of Tesseract https://www.youtube.com/watch?v=_4ruHJFsb4g How I Made an Ant Think It Was Dead—The Zombie Ant Experiment https://www.youtube.com/watch?v=ZPw9dSV6y2c What Happens if You Open a Vacuum Chamber Under Water? And Do Vacuums Float? https://www.youtube.com/watch?v=VugR1WdAOQw Can Light be Black? Mind-Blowing Dark Light Experiments! https://www.youtube.com/watch?v=p-OCfiglZRQ Mirror-Polished Japanese Foil Ball Challenge Crushed in a Hydraulic Press-What's Inside? https://www.youtube.com/watch?v=oJ2faqXlU1s Mixing the World's Blackest Paint With the World's Brightest Paint (Black 2.0 vs LIT) https://youtu.be/x5L4_GXePuk Is it Possible to Unboil an Egg? The Amazing Uncooking Experiment! https://youtu.be/QNV4gHWZ9p4 What if You Try To Lift a Negative Mass? Mind-Blowing Physical Impossibility! https://www.youtube.com/watch?v=uAJlg8MDAlU What Does a Giant Monster Neodymium Magnet do to a Mouse? https://www.youtube.com/watch?v=V8-JfSXPDp0 The Worlds Blackest Black vs The Worlds Brightest Flashlight (32,000 lumen)—Which Will Win? https://www.youtube.com/watch?v=AaFdCvnV8PM How Much Weight Can a Fly Actually Lift? Experiment—I Lassoed a Fly! https://www.youtube.com/watch?v=-xZoOUd172Q

3 месяцев назад
Why Do We Dream?

Why Do We Dream?

Leanback and IMG! later this week! LINKS TO LEARN: Smarter Every Day: http://www.youtube.com/destinws2 How to Lucid Dream: http://www.youtube.com/watch?v=llw717IARpQ Whatswhat reviews my beard and other stuff: http://ow.ly/700ES ALL music by Jake Chudnow: http://soundcloud.com/jakechudnow **SLEEP STUFF** Good general sleep info: http://en.wikipedia.org/wiki/Sleep Sleep facts: http://www.abc.net.au/science/sleep/facts.htm REM sleep: http://www.why-we-dream.com/remstate.htm Old video about REM sleep: http://www.youtube.com/watch?v=CzoU0_sgip4 Lucid Dreaming on the Discovery Channel: http://www.youtube.com/watch?v=ASf55cov5F8 Quick info in different dream theories: http://en.wikipedia.org/wiki/Dream#The_Neurobiology_of_dreaming Incredible documentary on a fatal disease that keeps you from sleeping: http://www.youtube.com/watch?v=nIeTVVAEFn8

7 лет назад
Universe: Beyond the Millennium - Planets

Universe: Beyond the Millennium - Planets

"Universe: Beyond the Millennium" is a television series observing astronomical phenomena, research, and theories on the universe and its origins. Narrated by John Hurt. The documentary premiered in 1999 and presents an overview of the universe as humans understood it at that time, and how we think it will evolve in the next millennium. Using 3D computer generated graphics, the series features animated sequences that offer insight into the Big Bang theory and the anatomy of the sun. "Planets", a new theory suggests that planets were formed from ice dwarfs or large solid lumps of frozen water. These ice dwarfs were causing cosmic collisions all throughout our solar system. Discover how this latest theory as well as cosmic collisions made earth hospitable and other planets in our solar system so desolate. We have blasted men and machines to our neighbouring worlds. Sent probes to the outer solar system. Discovered volcanoes erupting on the surface of distant moons, visited worlds more diverse than we had ever imagined. We have landed on Mars, walked on the moon. At the dawn of a new millennium, we're at the start of a new era of exploring the planets

5 лет назад
What if the Moon was a Disco Ball?

What if the Moon was a Disco Ball?

DISCO BALL MOON INFORMATION: The large mirror-tiles are 150km squared, and the small ones are 100km squared. They are all 10 km thick with glass (with an IOR of 1.56) There are 3012 mirrored tiles When as near as the ISS, the Earth surface to disco-ball-moon surface distance is 420 km or so The orbital period in relation to the earth is realistic, about a 2.1 hour period. When the disco moon is in low orbit, each reflection of the sun as a caustic is effectively a tiny sun, although you can never reflect enough light to get above the temperature of the surface of the sun (about 6000 degrees). Since the sunlight is going through glass first, glass will in general filter out a lot of the UV, so your caustics shouldn't reflect too much UV. The projection of a mirror-tile is larger than the projection of the sun when seen from low altitude. . when seen from far away the tile is smaller than the sun, and hence the caustic isn't as bright . Basically the disco tiles are glass with a silvered backing. Some of the light will not penetrate the glass, and will be simply reflected off the first surface of the glass, This reflection strength increases as the angle of incidence approaches 90, generally referred to as a Fresnel reflection.. or rather the strength follows that equation. This reflected light will generally be full spectrum The center of the giant flat mirror is orbiting at a distance of 2157.4 Km above the Surface of the earth, It's diameter is 3474.8 km (same as the moon), It's orbital period would be longer than the disco moon simply because it has less mass. But in this video it has the same orbital period as in the moon. The actual mass of the giant mirror is absurd.. it's way over­-engineered.. if a real one were to be built it wouldn't have huge thick rims, it would more likely resemble a girder work, with Mylar films. Not huge death star like mirror with towers, and strobe lights (and a strange lack of solar panels) Follow me on twitter! https://twitter.com/tweetsauce or instagram: http://instagram.com/electricpants and subscribe to Vsauce for more: http://www.youtube.com/user/vsauce?sub_confirmation=1 visuals by YETI DYNAMICS: https://www.youtube.com/yetidynamics music by JAKE CHUDNOW: http://www.youtube.com/JakeChudnow

5 лет назад
What If Everyone JUMPED At Once?

What If Everyone JUMPED At Once?

Follow Michael Stevens http://www.twitter.com/tweetsauce Tell Geek and Sundry that Vsauce says "hi!" and SUB!: http://www.youtube.com/watch?v=6-Wef0694aY http://www.Facebook.com/VsauceGaming music courtesy of http://www.SoundCloud.com/JakeChudnow Thanks to: http://www.youtube.com/phoenixsaintly and http://www.youtube.com/theINENIvlogs For helping me with this video at Summer in the City!! theINENIvlogs behind the scenes Summer in the City vid with me: http://www.youtube.com/watch?v=F_Rd35906MQ Why videos views freeze in the 300s on YouTube (sub to this channel FTW, seriously): http://www.youtube.com/watch?v=oIkhgagvrjI Japan Earthquake and Earth's rotation: http://en.wikipedia.org/wiki/2011_T%C5%8Dhoku_earthquake_and_tsunami#Geophysical_effects All people in one place LIVING: http://persquaremile.com/2011/01/18/if-the-worlds-population-lived-in-one-city/ shoulder-to-shoulder: http://news.nationalgeographic.com/news/2011/10/111031-population-7-billion-earth-world-un-seven/ BBC Jump Video: http://www.bbc.co.uk/learningzone/clips/if-the-whole-world-jumped-at-the-same-time-would-the-planet-move/13428.html SCALE OF UNIVERSE AWESOME: http://htwins.net/scale2/ STRAIGHTDOPE article on a jump: http://www.straightdope.com/columns/read/142/if-all-chinese-jumped-at-once-would-cataclysm-result Dot Physics on the jump: http://www.wired.com/wiredscience/2010/08/what-if-everyone-jumped/ Interactive scale of the universe: http://scaleofuniverse.com/ Decimate: http://www.etymonline.com/index.php?allowed_in_frame=0&search=decimate&searchmode=none Dunbar's Number: http://en.wikipedia.org/wiki/Dunbar's_number NPR story on Dunbar's number: http://www.npr.org/2011/06/04/136723316/dont-believe-facebook-you-only-have-150-friends Life Expectency: http://en.wikipedia.org/wiki/Life_expectancy How many people you meet in your life: http://eclectic24.wordpress.com/2009/03/15/how-many-people-will-you-meet-in-your-lifetime/ Newton's Third Law: http://www.physicsclassroom.com/class/newtlaws/u2l4a.cfm

7 лет назад
What Is A Paradox?

What Is A Paradox?

Brilliant: https://brilliant.org/vsauce2 Thanks to Brilliant for sponsoring this episode. *** SOURCES LINKS AND MORE *** “The Ways of Paradox and Other Essays” by Willard Van Orman Quine: https://www.amazon.com/Ways-Paradox-Other-Essays-Revised/dp/0674948378/ Zeno of Elea, Stanford Encyclopedia of Philosophy: https://plato.stanford.edu/entries/zeno-elea/ Zeno’s Paradoxes, Stanford Encyclopedia of Philosophy: https://plato.stanford.edu/entries/paradox-zeno/ Convergent Series, Khan Academy: https://www.khanacademy.org/math/calculus-home/series-calc/seq-conv-diverg-calc/v/convergent-and-divergent-sequences “Game Show Problem” by Marilyn vos Savant, Parade Magazine, 1990: http://marilynvossavant.com/game-show-problem/ “Solution to the Grandfather Paradox” by minutephysics: https://youtu.be/XayNKY944lY “The Faint Young Sun Paradox!” by MinuteEarth: https://youtu.be/qbnaes8X4iQ *********************************** Vsauce Links Website: http://www.Vsauce.com Twitter: https://twitter.com/VsauceTwo Facebook: https://www.facebook.com/VsauceTwo Hosted, Produced, Writing Contributions And Edited by Kevin Lieber Instagram: http://instagram.com/kevlieber Twitter: https://twitter.com/kevleeb Website: http://kevinlieber.com Research And Writing Contributions by Matthew Tabor https://twitter.com/matthewktabor Writing Contributions by Michael Stevens https://youtube.com/Vsauce VFX By Eric Langlay https://www.youtube.com/c/ericlanglay Special Thanks Paula Lieber https://www.etsy.com/shop/Craftality Select Music By Jake Chudnow: http://www.youtube.com/user/JakeChudnow Watch My Latest Video: https://youtu.be/NkYCWqzBc7M

10 месяцев назад