Which Way Is Down?

Xuất bản 02 Th11, 2017
lượt xem 24 273 995
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BRAIN CANDY LIVE www.braincandylive.com/tickets
THE VSAUCE CURIOSITY BOX: curiositybox.com
Links to sources and to learn more below!

my twitter tweetsauce
my instagram electricpants

Thanks to Eric Langlay ( www.youtube.com/user/ericdrav... ) for producing, editing, and animating this episode with me. Thanks also to Henry Reich ( www.youtube.com/user/minuteph... ) for his advice and guidance.

Universe Sandbox² : universesandbox.com/

Mass vs weight:

en.wikipedia.org/wiki/Mass_ve...
Great Veritasium video: www.youtube.com/watch?v=_Z0X0...
two other great videos: www.youtube.com/watch?v=6ccIj... and www.youtube.com/watch?v=aCqQz...

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/explainlikei...

Weight to mass (on surface of Earth) convertor: www.convertunits.com/from/kil...

pencil and Earth falling numbers: www.quora.com/When-we-drop-a-...

NASA HD footage: archive.org/details/NASA-Ultr...

Buoyancy: en.wikipedia.org/wiki/Buoyancy

Earth’s spin and its effect on ‘down’: www.freemars.org/jeff/Earth/do...

The measurement of Earth and its gravity:

en.wikipedia.org/wiki/Geodesy
en.wikipedia.org/wiki/Physica...

Movement of Earth’s center of mass:

www.aiub.unibe.ch/research/slr...
www.massentransporte.de/index....
citeseerx.ist.psu.edu/viewdoc/...

you get heavier before you get lighter as you descend into Earth: www.reddit.com/r/askscience/c...

vertical deflection:

en.wikipedia.org/wiki/Vertica...

practical uses of measuring gravity: en.wikipedia.org/wiki/Gravimetry

geoid:

en.wikipedia.org/wiki/Geoid
oceanservice.noaa.gov/facts/g...
www.youtube.com/watch?v=jOQl8...

Interactive Earth geoid: experiments.withgoogle.com/ch...

your weight when moon is overhead: www.thenakedscientists.com/fo...

Hammer and feather drop on moon: nssdc.gsfc.nasa.gov/planetary...

Why things fall at the same rate: www.quora.com/If-an-object-ha...

Wolfram Alpha cone geodesic tool: demonstrations.wolfram.com/Con...

General Relativity:

simple animation showing geodesic on cone and how it causes motion DOWN in space: www.youtube.com/watch?v=DdC0Q...
GREAT pbs spacetime video (watch the whole channel): www.youtube.com/watch?v=AwhKZ...
www.askamathematician.com/2009...
www.av8n.com/physics/geodesic...
www.pitt.edu/~jdnorton/teachin...
www.einstein-online.info/spotl...

time and gravity:

www.youtube.com/watch?v=jlTVI...
vichats.info/post/aHaHzYmUy2jRpJo/video.html
vichats.info/post/npSv02qopH2Qp3g/video.html
www.reddit.com/r/askscience/c...
www.reddit.com/r/AskScienceDi...

tests of general relativity: en.wikipedia.org/wiki/Tests_o...

RECOMENDED BOOKS:

great introductory texts:

“Relativity Visualized” by Lewis Carroll Epstein www.amazon.com/Relativity-Exp...

There’s also this PDF that takes Epstein’s diagrams into more detail: www.relativity.li/uploads/pdf/...

“Relativity Simply Explained” by Martin Gardener www.amazon.com/Relativity-Exp...

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-Incompreh...

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/933...

Vsauce
NHẬN XÉT  
  • I should do something better with my life

    I should do something better with my life

    16 giờ trước

    Your actually insane

  • Mostie

    Mostie

    16 giờ trước

    Which way is down?
    me:"alright he will probably just explain what way is down"
    Micheal: "so basically we're making the sun into a black hole"
    Me:"What?"

  • Snowman

    Snowman

    17 giờ trước

    Bro I swear he has every single thought of my 3 am thoughts

  • red fire 3000

    red fire 3000

    18 giờ trước

    down is down
    😂

  • Theo Hagi 2

    Theo Hagi 2

    19 giờ trước

    Bă ca Bun

  • AlphaHylian

    AlphaHylian

    Ngày trước

    whats the song at 13:09 it slaps

  • Harcix

    Harcix

    2 ngày trước

    What should i do, when my girlfriend asks to go down on her?

  • Harcix

    Harcix

    2 ngày trước

    ↓ Obviously

  • CMuffinzz

    CMuffinzz

    2 ngày trước

    6:20
    Me trying to explain to my crush that i’m not fat

  • reza Abbasi

    reza Abbasi

    3 ngày trước

    Everytime i come here to find clues for my existential crisis, i get more confused and why i did this and what should i do next.

  • mutant jellyfish

    mutant jellyfish

    4 ngày trước

    48 seconds. It took 48 fucking seconds.

  • Iam_aHumaNs

    Iam_aHumaNs

    4 ngày trước

    “How to weigh less”
    There, fixed the title

  • duong pham

    duong pham

    4 ngày trước

    I don't understand how a brain can come up with all this

  • Ryan Adiram

    Ryan Adiram

    4 ngày trước

    So everything was fine till you said time is slower at the head, I dont understand how can time be slower and what defines where it can be slower of faster

  • Dustin Mullins

    Dustin Mullins

    5 ngày trước

    TIME STRIKES AGAIN

  • Undercoft

    Undercoft

    5 ngày trước

    What if the a spaceship is not moving but can still see earth, as its velocity is not changing (0m/s/s) it is weightless. Yet to him people on earth aren’t accelerating.
    I have almost 100% certainty there is a reason but i don’t know it and would like to

  • Faafaafoofoo

    Faafaafoofoo

    7 ngày trước

    Cmoon.mp4

  • Betel zmail

    Betel zmail

    7 ngày trước

    vsauce pls make more vsauce

  • Harald Huber

    Harald Huber

    7 ngày trước

    Es gibt da im Internet ein fallexperiment in ner 50m hohen Vakuum kammer....Apfel Feder, sehr beeindruckend ;)
    Das war eine fall Zeit von v=sqrt(2gh)=h/t=>
    t=h/sqrt(2gh)=
    50m/sqrt(2*9.80665ms^-2*50m)~
    50/10sqrt2 s~5*0.71s
    T~3.5s tschaka laka la

  • Harald Huber

    Harald Huber

    7 ngày trước

    Coocoole Erdkugel-Menschanziehung (Gewichtmessung) Vorführung durch umdrehen der Waage....by the way hat unsere Erde in etwa das 100.000.000.000.000.000. 000.000xMasse(Micheals)...in Worten: die Erde hat in etwa die hundert tausend millionen millionen millionen-fache Masse Micheals (bzw eines Menschen halt ;P) ✌🏽🐿️

  • CDMC RST

    CDMC RST

    7 ngày trước

    I love how his videos always start like this "which way is down?" then 20 minutes later I'm questioning my existence.

  • Putri Syauqiyah athar

    Putri Syauqiyah athar

    7 ngày trước

    Vsauce is litteraly making an explanation of earth to aliens

  • KontrollFreek

    KontrollFreek

    7 ngày trước

    Vsauce is the only one who can completely baffle me while still making me learn and still be goofy enough to keep me watching

  • The Conphented Cow

    The Conphented Cow

    7 ngày trước

    Me, an australian, I only know upsidedown what is up?

  • InfinityKid2048

    InfinityKid2048

    8 ngày trước

    which way is down
    "yes"

  • Yuko Brando

    Yuko Brando

    8 ngày trước

    I want vsuace to play universe sandbox more

  • Susville

    Susville

    8 ngày trước

    Which way is down?
    Ok, first we need to turn the sun into a black hole

  • Jadiash

    Jadiash

    8 ngày trước

    Wtf? Why did I find this when I wanna sleep. YouTube what the fuck is up with ur recommendation??? At 3 in the morning seriously?? Now I'll never get to bed.😭😭😭

    • Happy duck

      Happy duck

      8 ngày trước

      Dont watch youtube at 3am then

  • Yecto

    Yecto

    8 ngày trước

    This video is very well detailed made
    8 billion people need to see this video to get the basic understanding about gravity

  • TooVuForYou

    TooVuForYou

    8 ngày trước

    does anyone know what soundtrack starts playing at 9:48?

  • Bryan Draughn

    Bryan Draughn

    8 ngày trước

    Dude!!

  • JKLR CREATIONS

    JKLR CREATIONS

    8 ngày trước

    It’s 4 am why am I watching this

  • Nooby360

    Nooby360

    9 ngày trước

    Down Up Left And Right is the way your looking your left is someone right or up maybe down same with everything else
    Even all sides Down is all sides but as well not
    Down is up left and right but also is Down
    Up is Down left and right is too is Up
    Same with left and right
    Down is like infinity there are there but it all number but as well not same with down up left and right
    So down is everything but is not as well

    • JKLR CREATIONS

      JKLR CREATIONS

      8 ngày trước

      What did I just read

  • Paul Braunstein

    Paul Braunstein

    9 ngày trước

    23:42

  • cozmoroller

    cozmoroller

    9 ngày trước

    9:01 michael talking and the music synced up here

  • DanTrexPlay90

    DanTrexPlay90

    10 ngày trước

    Q: Which way is down?
    A: There is no gravity.

  • GeneralPatton88

    GeneralPatton88

    10 ngày trước

    Down is whichever way gravity is pulling you. It's always easy to go down, going back up is more difficult because you have to overcome gravity.

  • Oscar A De Aza

    Oscar A De Aza

    10 ngày trước

    Find the direction you are facing then location then earth direction then orbit then all the way to the universe.
    When actually knowing the directions is impossible to follow, you have to know the directions of everything and where it is facing.

  • Pix3late

    Pix3late

    10 ngày trước

    the way that isn't up.

  • Igor

    Igor

    11 ngày trước

    Just started learning physics. Currently learning about heat. In 5 years i hope to understand

  • BossToober87

    BossToober87

    11 ngày trước

    Stop calling geodesics straight you hack

  • ShadowG17

    ShadowG17

    12 ngày trước

    airor

    :)

  • Kyle Jackson

    Kyle Jackson

    12 ngày trước

    17:16

  • cade fischer

    cade fischer

    12 ngày trước

    vsuace being a good be like: first lets turn the sun into a black hole

  • Black Fire

    Black Fire

    12 ngày trước

    Now do which way is up

  • Shadowlight minecrif

    Shadowlight minecrif

    12 ngày trước

    How did he convince me that gravity is fake...............:o

    • Profile അടിച്ചുപോയി✓

      Profile അടിച്ചുപോയി✓

      9 ngày trước

      @Frankie and Benjy Mouse hmm yeah you could say that its its a pushing force of space

    • Frankie and Benjy Mouse

      Frankie and Benjy Mouse

      9 ngày trước

      @Profile അടിച്ചുപോയി✓ It is an emerging force from the curvature of space time.

    • Profile അടിച്ചുപോയി✓

      Profile അടിച്ചുപോയി✓

      10 ngày trước

      Gravity doesn't exist general relativity proves that

  • Blake Laisure

    Blake Laisure

    12 ngày trước

    Is this the eureka theme song?

  • Rowdy Bunch

    Rowdy Bunch

    12 ngày trước

    Damn how much lsd weigh? Cuz imma trippin HEAVY

  • zenno corthaut

    zenno corthaut

    12 ngày trước

    Down is a syndrome 🥺

    • Harcix

      Harcix

      2 ngày trước

      LOL

  • Tentative Entertainment

    Tentative Entertainment

    12 ngày trước

    Please tell us Michael, is ignorance really actually bliss .. or not

  • The kid with no hairline Person

    The kid with no hairline Person

    13 ngày trước

    How I feel now🧠

  • Blake Langdon

    Blake Langdon

    13 ngày trước

    HEY VSAUCE MICHALE HERE LETS SEE HOW FAST YOU CAN EXPLODE A PLANET

  • goo goo

    goo goo

    13 ngày trước

    Gravity has everything to do with the ironball economy moving anteclockwise. Clock to tweet meets

  • goo goo

    goo goo

    13 ngày trước

    Solar system dries blackhole to boredom again

  • Hayden Lloyd

    Hayden Lloyd

    14 ngày trước

    Could’ve literally ended the video here 0:25

  • brian white

    brian white

    14 ngày trước

    9 trillionth the width of a proton!? holy hell how can you even measure something that small. 7:15

    • Harcix

      Harcix

      2 ngày trước

      With a tiny ruler

    • S Patrk

      S Patrk

      10 ngày trước

      with math. its not like he took a proton and measured it with some sort of measuring tape. he calculated it with math. find x, etc...

  • Dont_wake_me_up

    Dont_wake_me_up

    14 ngày trước

    Before watching this video i think on planets down is were gravity it pulling yo in space there is no down u are just floating meaning in space theres not down

  • BriTheFri

    BriTheFri

    15 ngày trước

    Thank you Michael, I won a game of wits and wagers because of this video.

  • Call me Bungus

    Call me Bungus

    15 ngày trước

    13:45

  • EJxx Gamerxx

    EJxx Gamerxx

    15 ngày trước

    Bvnb b

  • cocon'tdon'tococ

    cocon'tdon'tococ

    15 ngày trước

    The term down is irrelevant for anyone without gravity, space is not down, or up, its all around, and since a majority of the universe is just space then its irrelevant

  • UL Ros

    UL Ros

    15 ngày trước

    How is someone’s down my up

  • Yorange

    Yorange

    15 ngày trước

    Time is a cone

  • Idkanymore Whocares

    Idkanymore Whocares

    16 ngày trước

    Soooo we not gonna talk abt how many tabs that man had open

  • Richard DiBella

    Richard DiBella

    17 ngày trước

    Michæl: why do things fall? are they being pushed or pulled? or is it THE FLUCTUATION OF THE 4TH DIMENSION?

  • Muhammed Yeşil

    Muhammed Yeşil

    17 ngày trước

    Look at his references, he is most probably an ib student.

  • Weems09

    Weems09

    17 ngày trước

    And this is why time slows down The closer you get to black holes.



    (I think)

  • Il tizio che commenta

    Il tizio che commenta

    17 ngày trước

    Michael is just beyond being a professor

  • BRB animations

    BRB animations

    17 ngày trước

    0:37-0:44 Micheal forgot what gravity was

  • crazy Jake

    crazy Jake

    19 ngày trước

    My brain goes brrrrrr


    Love the videos 👍

  • Pat Rick

    Pat Rick

    19 ngày trước

    Easy answer, which every way is down

  • The Afreet

    The Afreet

    19 ngày trước

    nerd

  • Bird King447

    Bird King447

    19 ngày trước

    If there was a solar eclipse right over you during the olympic high jump tournament. These Olympic games would be hosted in Queensland, Australia or somewhere close to the equator. Would the high jumpers technically jump higher?

    • S Patrk

      S Patrk

      10 ngày trước

      yes. but at such small amount it wouldnt affect anything. like units smaller than nanometers.

  • Multiversal Cube of Insignificance

    Multiversal Cube of Insignificance

    20 ngày trước

    -Gravity-

  • Multiversal Cube of Insignificance

    Multiversal Cube of Insignificance

    20 ngày trước

    Why does YouTube delete certain comments?

  • Multiversal Cube of Insignificance

    Multiversal Cube of Insignificance

    20 ngày trước

    Gravity Vsauce Michael Stevens Gavin Reynolds

  • Multiversal Cube of Insignificance

    Multiversal Cube of Insignificance

    20 ngày trước

    Isaac Newton

  • ELzY

    ELzY

    20 ngày trước

    I feel like through human history the word “down” was always in the direction of Earth’s gravitational pull. So if you were in space no matter in which continent you would say “Going back *down* to Earth.”

    • the SIMP machine

      the SIMP machine

      12 ngày trước

      Duuuuuhhhhhhhhhhh

    • Релёкс84

      Релёкс84

      17 ngày trước

      It's not exactly Earth's gravitational pull, but the sum of all forces acting on you *relative to the ground below you* - that means it doesn't include forces that pull on you and the Earth the same way (ie most of the attraction from the Sun and planets), but it does include the centrifugal force from the Earth's rotation.

  • Soul Mechanics

    Soul Mechanics

    20 ngày trước

    Now this one is an actual illusion, and a very good idea. A paper ribbon does work better. Merci.

  • Soul Mechanics

    Soul Mechanics

    20 ngày trước

    Buoyancy. We have levity as well, we simply forget about that factor and our ability to apply it practically atrophies. It is still there, you can still use it.

    • Soul Mechanics

      Soul Mechanics

      20 ngày trước

      Objects are not "falling", they are "floating".

  • Archiez

    Archiez

    20 ngày trước

    idk about the moon landing video...

    • yert

      yert

      20 ngày trước

      wdym

  • cubedood

    cubedood

    20 ngày trước

    Dang that glove demonstration with the retractable cards was good

  • Daisuke Sakamata

    Daisuke Sakamata

    20 ngày trước

    I wish this man was my science teacher

  • Idan

    Idan

    21 ngày trước

    2:42 Something tells me he was in that hammock very recently

    • yert

      yert

      20 ngày trước

      vichats.info/post/rqOq2ZHZqKGw2ow/video.html

  • Oof ImGay

    Oof ImGay

    21 ngày trước

    "First things first, lets turn the sun onto a black hole."
    Im dead now, in both ways

  • yes im very cool

    yes im very cool

    21 ngày trước

    What is water

  • HOUDINI KONG

    HOUDINI KONG

    21 ngày trước

    There is no up or down. Just here and there.

  • LucasPlayz 846

    LucasPlayz 846

    22 ngày trước

    Down

  • SpiderSweat

    SpiderSweat

    22 ngày trước

    tIMe tRaVeL

  • mentle gen

    mentle gen

    22 ngày trước

    cannot believe a video educating people about what way is down is 26 minutes long but still enjoyable

  • Mahyar Khosravi

    Mahyar Khosravi

    22 ngày trước

    What is the song at 14:34?

  • Hexstatic Loonatic

    Hexstatic Loonatic

    22 ngày trước

    I still don't get how this squares up with finding the Higgs boson and detecting gravitational waves

  • smcyclone

    smcyclone

    22 ngày trước

    Also, which way is up??

    • Bangi69xD

      Bangi69xD

      22 ngày trước

      Opposite of left of course

  • smcyclone

    smcyclone

    22 ngày trước

    Wait so if down is always changing, how do we know if down even exists??

    • Bangi69xD

      Bangi69xD

      22 ngày trước

      Something created by us

  • ibn4

    ibn4

    23 ngày trước

    I don't understand anything but i love it

  • Aurea Barayuga

    Aurea Barayuga

    23 ngày trước

    8:27
    Balloon: Hey Michael do you know where my string is?
    Michael: *grabs him*
    Balloon: ahh s**t here we go again

  • Mike Vasey

    Mike Vasey

    23 ngày trước

    4:25 lol best moment

  • Henry M

    Henry M

    24 ngày trước

    haha 2:53