Which Way Is Down?

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  • Published: 02 November 2017
  • BRAIN CANDY LIVE www.braincandylive.com/tickets
    THE VSAUCE CURIOSITY BOX: www.curiositybox.com/
    Links to sources and to learn more below!
    my twitter twitter.com/tweetsauce
    my instagram instagram.com/electricpants
    Thanks to Eric Langlay (declips.net/user/ericdraven30) for producing, editing, and animating this episode with me. Thanks also to Henry Reich (declips.net/user/minutephysics) for his advice and guidance.
    Universe Sandbox² : universesandbox.com/
    Mass vs weight:
    en.wikipedia.org/wiki/Mass_versus_weight
    Great Veritasium video: declips.net/video/_Z0X0yE8Ioc/video.html
    two other great videos: declips.net/video/6ccIjRwYO9U/video.html and declips.net/video/aCqQzrPCcFM/video.html
    baseballs coming together under gravitational attraction can be simulated in Universe Sandbox 2. More math behind it can be found here: www.reddit.com/r/explainlikeimfive/comments/2vyxl7/eli5_will_two_baseballs_a_foot_apart_in_deep/
    Weight to mass (on surface of Earth) convertor: www.convertunits.com/from/kilograms/to/newton
    pencil and Earth falling numbers: www.quora.com/When-we-drop-a-pencil-the-earth-attracts-it-and-it-seems-that-the-pencil-is-falling-towards-earth-Why-doesnt-the-earth-come-up-towards-the-pencil
    NASA HD footage: archive.org/details/NASA-Ultra-High-Definition
    Buoyancy: en.wikipedia.org/wiki/Buoyancy
    Earth’s spin and its effect on ‘down’: www.freemars.org/jeff/Earth/down.htm
    The measurement of Earth and its gravity:
    en.wikipedia.org/wiki/Geodesy
    en.wikipedia.org/wiki/Physical_geodesy
    Movement of Earth’s center of mass:
    www.aiub.unibe.ch/research/slr_data_analysis/estimating_the_geocenter_and_earth_rotation_parameter/index_eng.html
    www.massentransporte.de/index.php?id=307
    citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.650.4392&rep=rep1&type=pdf
    you get heavier before you get lighter as you descend into Earth: www.reddit.com/r/askscience/comments/4qfl52/do_you_get_lighter_the_further_underground_that/
    vertical deflection:
    en.wikipedia.org/wiki/Vertical_deflection
    practical uses of measuring gravity: en.wikipedia.org/wiki/Gravimetry
    geoid:
    en.wikipedia.org/wiki/Geoid
    oceanservice.noaa.gov/facts/geoid.html
    declips.net/video/jOQl8DRzQks/video.html
    Interactive Earth geoid: experiments.withgoogle.com/chrome/geoid-viewer
    your weight when moon is overhead: www.thenakedscientists.com/forum/index.php?topic=11639.0
    Hammer and feather drop on moon: nssdc.gsfc.nasa.gov/planetary/lunar/apollo_15_feather_drop.html
    Why things fall at the same rate: www.quora.com/If-an-object-has-more-mass-then-its-pull-on-earth-would-be-greater-than-an-object-with-less-mass-and-therefore-should-fall-to-earth-faster-Why-do-objects-of-different-mass-fall-to-earth-at-the-same-speed
    Wolfram Alpha cone geodesic tool: demonstrations.wolfram.com/ConeGeodesics/
    General Relativity:
    simple animation showing geodesic on cone and how it causes motion DOWN in space: declips.net/video/DdC0QN6f3G4/video.html
    GREAT pbs spacetime video (watch the whole channel): declips.net/video/AwhKZ3fd9JA/video.html
    www.askamathematician.com/2009/10/q-why-does-curved-space-time-cause-gravity/
    www.av8n.com/physics/geodesics.htm#sec-straight
    www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/spacetime/
    www.einstein-online.info/spotlights/geometry_force
    time and gravity:
    declips.net/video/jlTVIMOix3I/video.html
    declips.net/video/1ENkP0h8nAg/video.html
    declips.net/video/gcvq1DAM-DE/video.html
    www.reddit.com/r/askscience/comments/30lt1o/bending_of_space_not_responsible_for_objects/
    www.reddit.com/r/AskScienceDiscussion/comments/3rfmtl/does_time_dilation_cause_gravity_or_the_other_way/
    tests of general relativity: en.wikipedia.org/wiki/Tests_of_general_relativity
    RECOMENDED BOOKS:
    great introductory texts:
    “Relativity Visualized” by Lewis Carroll Epstein www.amazon.com/Relativity-Explained-Classics-Science-Mathematics/dp/0486293157
    There’s also this PDF that takes Epstein’s diagrams into more detail: www.relativity.li/uploads/pdf/English/Epstein_en.pdf
    “Relativity Simply Explained” by Martin Gardener www.amazon.com/Relativity-Explained-Classics-Science-Mathematics/dp/0486293157
    great intro to the math of general relativity:
    “A Most Incomprehensible Thing: Notes Towards a Very Gentle Introduction to the Mathematics of Relativity” by Peter Collier www.amazon.com/Most-Incomprehensible-Thing-Introduction-Mathematics/dp/0957389469/
    Requires some background in relevant math topics (see above) but very very good:
    “Spacetime And Geometry: An Introduction To General Relativity” by Sean Carrol www.amazon.com/gp/product/9332571651/

Comments • 45 107

  • Daimien Taylor
    Daimien Taylor  Vor 45 Minuten

    This actually makes sense. I mean thats why things fall towards Black Holes, not because they are the most gravity hungry beasts out there but because time slows down the closer you fall in until time stops.

    • mariah oblake
      mariah oblake  Vor 3 Stunden

      Imagine having to scroll all the way down after typing in "Vsauce" hmmm sellout things. Good luck in life keep up the premium really helps the community and you fall.

      • ZeroPhoenix
        ZeroPhoenix  Vor 4 Stunden

        i miss you HowToBasic, please come back

        • Soplesz
          Soplesz  Vor 4 Stunden

          What if i climb on mount everest while the moon is above me and i weigh myself? Edit: Autocorrect corrected "Mount" to "Mouth"

          • Soplesz
            Soplesz  Vor 4 Stunden

            Why don't they just fill the ISS with helium bruh.

            • SomeRandomLad04
              SomeRandomLad04  Vor 5 Stunden

              12:40, how many tabs do you have mate?

              • krazy clutz
                krazy clutz  Vor 6 Stunden

                This is a question I've never thought about...

                • Karsen Kelley
                  Karsen Kelley  Vor 8 Stunden

                  why do you not post anymore?

                  • Shika Maru
                    Shika Maru  Vor 10 Stunden

                    Hey! Wii Sports! Matt here. Lmao.

                    • subscribe 2 pewds x
                      subscribe 2 pewds x  Vor 11 Stunden

                      nobody: literally nobody: michael: How to Taste the Colour 7.

                      • space wolf27
                        space wolf27  Vor 12 Stunden

                        V sauce u should be a teacher!

                        • EvanRB
                          EvanRB  Vor 13 Stunden

                          RIP Vsauce Died of DEclips red

                          • john M. h.
                            john M. h.  Vor 14 Stunden

                            Who needs a diet? Just move to somewhere close to the equator

                            • Adoka
                              Adoka  Vor 14 Stunden

                              Me: Which way is down? Vsauce: Let's look at time travel Me: wait what

                              • AntFilms
                                AntFilms  Vor 15 Stunden

                                I’m still waiting for him to remember his DEclips password…

                                • MrSeedkey
                                  MrSeedkey  Vor 16 Stunden

                                  The last free video vsauce made

                                  • what the hell are you looking at?

                                    dammit i cant watch big brain vsauce videos anymore after this one

                                    • Robz 422
                                      Robz 422  Vor 18 Stunden

                                      Rip memes

                                      • Rohan Dole
                                        Rohan Dole  Vor 23 Stunden

                                        At 3:56 I thought he was gonna bust out the rapping skills.

                                        • maya chi
                                          maya chi  Vor Tag

                                          i remember watching vsauce when i was like 12 years old and thinking I was so smart and that I had such a big brain and then I went to highschool and my spirit was crushed

                                          • Tudor Andy
                                            Tudor Andy  Vor Tag

                                            VSAUCE HAS BEEN CURSED BY DEclips RED NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO

                                            • noonesflower
                                              noonesflower  Vor Tag

                                              Total undemonstrable crap to support spinning balls in fake space.

                                              • Wizzard
                                                Wizzard  Vor Tag

                                                This put a smile on my face.

                                                • Sinearchi
                                                  Sinearchi  Vor Tag

                                                  Why everytime I see Michael, I also see the numbers "5" and "8"

                                                  • I Pavlov
                                                    I Pavlov  Vor Tag

                                                    Was 2019, still waiting for new videos

                                                    • Ethan Ethington
                                                      Ethan Ethington  Vor 2 Tage

                                                      Still waiting for another non DEclips red video

                                                      • SwiffftyD
                                                        SwiffftyD  Vor 2 Tage

                                                        26:10 a legend will rest

                                                        • Preoccupiedude
                                                          Preoccupiedude  Vor 2 Tage

                                                          For _anyone_ wondering *WHY* there’s nothing but YT Red on this channel now, read *_this:_* www.reddit.com/r/vsauce/comments/86a49b/can_anyone_tell_me_why_the_vsauce_videos_of/

                                                          • Ghost Boi
                                                            Ghost Boi  Vor 2 Tage

                                                            Premium videos dude?..... really?

                                                            • Carlos Silva
                                                              Carlos Silva  Vor 2 Tage

                                                              What i learned in this video Dont do regime, move to the equator

                                                              • Mirza Danish Beg
                                                                Mirza Danish Beg  Vor 2 Tage

                                                                Here is the problem. Time is only important to us, because our lives as humans and living creatures, is finite. We know that we will eventually die, due to a constant cellular decay. If time as universal irreversibility was removed from our equation of life, things would become Pretty irrelevant.

                                                                • Ninja Boy
                                                                  Ninja Boy  Vor 3 Tage

                                                                  Me : hey michael what s up Michael : *but what s DOWN* *vsauce music intensifies*

                                                                  • Lillie Jae
                                                                    Lillie Jae  Vor 3 Tage

                                                                    Only Australians know

                                                                    • Commercial Fisher
                                                                      Commercial Fisher  Vor 3 Tage

                                                                      Watch the pencil 6:50

                                                                      • Nino SK
                                                                        Nino SK  Vor 3 Tage

                                                                        everybody gangsta until the serious music starts playin'

                                                                        • Kamen Dimitri
                                                                          Kamen Dimitri  Vor 3 Tage

                                                                          Maaann, i miss Vsauce so much. Please come back on day!

                                                                          • Myth Buster
                                                                            Myth Buster  Vor 3 Tage

                                                                            VSauce's videos are the best way to get rid of youtube addiction, cos what he says is so complicated to understand :P

                                                                            • FireCats FC
                                                                              FireCats FC  Vor 3 Tage

                                                                              F

                                                                              • Sarah Carman
                                                                                Sarah Carman  Vor 3 Tage

                                                                                Don't use millinery petersham for the ribbon test, it's designed to curve and stretch XD

                                                                                • *Pure Alolan* *Water*
                                                                                  *Pure Alolan* *Water*  Vor 3 Tage

                                                                                  You douche, just made me loose my shiny chain in Pokémon Im disliking

                                                                                  • MarcosLovesJam
                                                                                    MarcosLovesJam  Vor 3 Tage

                                                                                    13:47 the ‘kill me’ face

                                                                                    • inox1ck
                                                                                      inox1ck  Vor 3 Tage

                                                                                      Rip Vsauce 2011-2017 you will be missed

                                                                                      • gewoon dief man
                                                                                        gewoon dief man  Vor 3 Tage

                                                                                        11:18 is that pornhub on the seventh tab

                                                                                        • Ant D
                                                                                          Ant D  Vor 4 Tage

                                                                                          I've actually thought about this a lot lol. Good video

                                                                                          • I want my kids susan
                                                                                            I want my kids susan  Vor 4 Tage

                                                                                            Vsauce title: which way is down? Me: okay let’s find out. Michael: *time travel* Me: what... that’s not what we were discus- Michael: first things first, let’s turn the sun into a black hole. Me: okay you have my attention.

                                                                                            • Atticus Evans
                                                                                              Atticus Evans  Vor 4 Tage

                                                                                              11:30 “1 arc second is about how wide a U.S dime would look from 4km(2.5mi)” what are you talking about time and size have no correlation the only thing you can do with time I measure is with size by getting say 60 things the same size and putting them together and then getting 1 more the same size and saying this is what 1 second looks like compared to one minute, but you gave us no unit of comparison so your display of an explanation makes zero sense.

                                                                                              • max5250
                                                                                                max5250  Vor 14 Stunden

                                                                                                Your explanation makes zero sense since you don't have clue what "arc second" means. It is a measure of angle, and not a time. Please educate yourself.

                                                                                                • ROXIE
                                                                                                  ROXIE  Vor 4 Tage

                                                                                                  I hate DEclips red

                                                                                                  • Albiechops V
                                                                                                    Albiechops V  Vor 4 Tage

                                                                                                    He’s made a new channel called d!ng everyone calm down

                                                                                                    • Jude Hale
                                                                                                      Jude Hale  Vor 4 Tage

                                                                                                      F

                                                                                                      • Jobos a hobo
                                                                                                        Jobos a hobo  Vor 4 Tage

                                                                                                        Next time I weigh myself ill make sure to eat an apple for a accurate weight

                                                                                                        • Jobos a hobo
                                                                                                          Jobos a hobo  Vor 4 Tage

                                                                                                          I’m a time traveler in the year 2072 Jupiter falls off its axis and passes earth and its distance equalises gravity in Britain in other countries its just low gravity

                                                                                                          • blastbladevx
                                                                                                            blastbladevx  Vor 4 Tage

                                                                                                            Steel ball run

                                                                                                            • Farmer Dingus
                                                                                                              Farmer Dingus  Vor 4 Tage

                                                                                                              Everybody should unsubscribe to show them we don't want premium videos

                                                                                                              • TheWrongBrother
                                                                                                                TheWrongBrother  Vor 4 Tage

                                                                                                                You made a mistake. The down for the person on the other side of the world is still yours and their down!!!

                                                                                                                • max5250
                                                                                                                  max5250  Vor Stunde

                                                                                                                  @TheWrongBrother There is no doubt about it. For every observer on the Earth, direction of down will be from their heads to the toes. But here we are discussing about the direction of down from different perspective, or let say, direction in relation to the Space. Since we are living on spherically shaped object, and direction of down always goes from the surface to the centre of the sphere, direction of 'down' of person standing on one side of the Earth will be pointing into diametrically opposite direction from the person standing on the other side of the Earth.

                                                                                                                  • TheWrongBrother
                                                                                                                    TheWrongBrother  Vor 5 Stunden

                                                                                                                    @max5250 the planet is more or less spherical. All down references are lines that max out at the centre of the planet. Immediately the line exceeds the central point, it ceases to be a down force so to speak. So down for everything on the surface points to the same place.

                                                                                                                    • max5250
                                                                                                                      max5250  Vor 14 Stunden

                                                                                                                      No hi didn't made mistake, since direction of your down, and down of the person on the other side of the world, are pointing in different directions.

                                                                                                                      • tigerpulse
                                                                                                                        tigerpulse  Vor 4 Tage

                                                                                                                        question: which way is down? answer: *DEclips RED*

                                                                                                                        • tigerpulse
                                                                                                                          tigerpulse  Vor 4 Tage

                                                                                                                          I miss the old Vsauce. :(

                                                                                                                          • Over Very hight skill
                                                                                                                            Over Very hight skill  Vor 5 Tage

                                                                                                                            curiosity box is not delivered to Russia (((

                                                                                                                            • WilliamDopeFresh
                                                                                                                              WilliamDopeFresh  Vor 5 Tage

                                                                                                                              Which way is Down Syndrome?

                                                                                                                              • Raiyan Hasan
                                                                                                                                Raiyan Hasan  Vor 5 Tage

                                                                                                                                Ok, Fine, Here's a quck explanation, Down is down, No problem.

                                                                                                                                • BattleBunnyQuinn
                                                                                                                                  BattleBunnyQuinn  Vor 5 Tage

                                                                                                                                  I'm not sure why we refer to the speed of an object relative to the Earth when relativity comes up. Wouldn't the combined speed of all our cosmic hierarchy matter more? For instance, assuming the Sun were the center of the universe, wouldn't the part of Earth pointing away from the sun be moving significantly faster than that pointing towards?

                                                                                                                                  • max5250
                                                                                                                                    max5250  Vor 14 Stunden

                                                                                                                                    "I'm not sure why we refer to the speed of an object relative to the Earth when relativity comes up." Because speed is measured in relation to some reference frame. "Wouldn't the combined speed of all our cosmic hierarchy matter more?" No, it wouldn't. You can play snooker on the ground, or in an airplane flying at 500 mph, without any problem, although you are moving much faster (relative to the ground) in an airplane. "For instance, assuming the Sun were the center of the universe, wouldn't the part of Earth pointing away from the sun be moving significantly faster than that pointing towards?" It would appear so, since the surface of every rotating object appears to move at different speeds when measured from some point outside of that object. For instance, surface of car tyre on the top of the tyre moves faster then the surface of tyre on bottom of the tyre, while car is driving straight, when measures in relation to the ground under the car (because speed on top of the tyre is calculated by adding the speed of the car with speed of the movement of tyre surface in direction of car movement, while speed on the bottom of the tyre is calculated by subtracting the speed of the movement of tyre surface from the speed of the car, since surface of tyre at that point is moving in opposite direction of the car movement). However, in reality every point on the surface of the car tyre is moving at exactly the same speed around the centre of the car tyre and that's only what's important.

                                                                                                                                    • Tierome
                                                                                                                                      Tierome  Vor 5 Tage

                                                                                                                                      Close your eyes and listen 2:59

                                                                                                                                      • Nexus
                                                                                                                                        Nexus  Vor 5 Tage

                                                                                                                                        Vsauce : *Just casually making videos* DEclips Red : IM ABOUT TO END THIS MANS WHOLE CAREER

                                                                                                                                        • Kodek
                                                                                                                                          Kodek  Vor 5 Tage

                                                                                                                                          Y'all sure DEclips red isnt code for youtube making him bleed and squeezing everything good out of him and *not* putting it in his DEclips red series

                                                                                                                                          • Eric Olson
                                                                                                                                            Eric Olson  Vor 6 Tage

                                                                                                                                            A pound is not a unit of mass, it's a unit of force. A slug is the unit of mass in the Imperial system.

                                                                                                                                            • 『 B e n j i 』
                                                                                                                                              『 B e n j i 』  Vor 6 Tage

                                                                                                                                              If we find time traveling machines im showing this entire channel to someone from the middle ages

                                                                                                                                              • Gyro Zeppeli
                                                                                                                                                Gyro Zeppeli  Vor 6 Tage

                                                                                                                                                Please comeback

                                                                                                                                                • Rafael Castillo
                                                                                                                                                  Rafael Castillo  Vor 6 Tage

                                                                                                                                                  What Is real

                                                                                                                                                  • Connor RK800
                                                                                                                                                    Connor RK800  Vor 6 Tage

                                                                                                                                                    Vsauce makes videos on DEclips Red only Me: *you took him away from me!*

                                                                                                                                                    • VUnkarll Vlogs & games

                                                                                                                                                      Hmmm... 👇👇👇👌

                                                                                                                                                      • Tc
                                                                                                                                                        Tc  Vor 6 Tage

                                                                                                                                                        If you confused on which way down is, its where your heading towards

                                                                                                                                                        • xMultiGamerX
                                                                                                                                                          xMultiGamerX  Vor 6 Tage

                                                                                                                                                          Hey Vsauce, if you ever remember your channel password again, can you make a video on the butterfly effect specifically?

                                                                                                                                                          • Hello._.Friend03
                                                                                                                                                            Hello._.Friend03  Vor 6 Tage

                                                                                                                                                            What would happen if the earths crust like inverted itself and floated off into space

                                                                                                                                                            • Rafael Cruz
                                                                                                                                                              Rafael Cruz  Vor 6 Tage

                                                                                                                                                              I'm really impressed with this video but I didn't understand nothing :D

                                                                                                                                                              • Floorboards
                                                                                                                                                                Floorboards  Vor 6 Tage

                                                                                                                                                                MICHAEL, GET DOWN! Michael: 0:05