SCIENCE CLASS #1- WHY Does Helium Make Your Voice Higher?
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Live stream with demos your brain will enjoy where we answer a basic question every time.

Does farting make you weigh more or less?!?! Place your guess and give me feedback too- forms.gle/gqNw9Ht83Vzo2va4A

Ummæli
  • Mark Rober
    Mark Rober

    FIIIIRSSSST!!!

    • Mark shorts
      Mark shorts

      @Kevin Luo very simplified :)

    • Rauwe saus Gamen
      Rauwe saus Gamen

      @unknown ! wow lul mag dat wel van je moeder XD

    • Just Myself
      Just Myself

      19,95,205th😂😂

    • JustABob YT
      JustABob YT

      What that’s not fair

    • killakira12
      killakira12

      Omg lol

  • RimedBlade
    RimedBlade

    Nooo I’m late in these classes can we get some more of these

  • Megan B
    Megan B

    I could do any degree if mark was my teacher . He could make me interested in watching Paint dry ..

  • Crazi Russian13
    Crazi Russian13

    He’s also reading a script I can see it

  • Crazi Russian13
    Crazi Russian13

    I like how he’s trying to act like bill nye

  • SixthLace
    SixthLace

    I'm going into 7th grade and Mark is making High school physics make sense to me 👍🏼👍🏼👍🏼👍🏼 Btw Mark is wicked smart

  • SixthLace
    SixthLace

    That's crazy air is not a gas but a liquid

  • Rauwe saus Gamen
    Rauwe saus Gamen

    bring thee trees back

  • Ezra the fortnite God
    Ezra the fortnite God

    I want mark to be my teacher

  • Vicki Sainsbury
    Vicki Sainsbury

    Sup mark how are you doing boi

  • Ender Rider
    Ender Rider

    Hey dude you should make a channel for these types of vid

  • Sci F 778 Mansi Saraiya
    Sci F 778 Mansi Saraiya

    I know all this but i still watched the whole video

  • AwesomeKid
    AwesomeKid

    be my science teacher or piggy will catch you

  • Megan A.
    Megan A.

    umm probably nobody will see this but ima ask this question how come u see really flat rocks then u see wierd shaped rocks???

  • jamcdonald120
    jamcdonald120

    23:30 Because Heavier things totally fall faster

  • Derek Rodriguez Nieves
    Derek Rodriguez Nieves

    Is another class gonna happen? I wanna be in

  • ಥ_ಥ CG
    ಥ_ಥ CG

    im pretty sure EVERYONE would love him as there teacher

  • Scott Borror
    Scott Borror

    So he just explained to me why most women's voices are higher then men's. They exercise their vocal cords more (they talk too much).

  • Sabina KC
    Sabina KC

    Just become a teacher

  • Sabina KC
    Sabina KC

    15 minutes huh

  • tickler1983
    tickler1983

    Love how you do your vids! Why are people ticklish, can we not be ticklish, and is everyone ticklish?

  • Darsshan M
    Darsshan M

    This guys is a genious at explaining things. I fricking love him.

  • My Smirf
    My Smirf

    The pretty writer unprecedentedly search because silica concurringly form between a wise windscreen. unused, lamentable orange

  • Neil Wadhia
    Neil Wadhia

    0:50 sounds like a vampire

  • Hannah Rich
    Hannah Rich

    Yo be my high school teacher!!

  • Kenza Rezyarifin
    Kenza Rezyarifin

    Imagine mark is your physics teacher, everything make sense and you like science

  • ☆A•F•N•N•I•A•M•F•E☆
    ☆A•F•N•N•I•A•M•F•E☆

    Dude I wish you were my teacher, you mange to make everything interesting I would not get bored

  • Andrew Xiao
    Andrew Xiao

    Can't believe its already been over a year.

  • Arthur Birck
    Arthur Birck

    So is there any sound in space?

    • Hamza Ahsan
      Hamza Ahsan

      There are no particles for the sound vibrations too travel through

    • Hamza Ahsan
      Hamza Ahsan

      No

  • Christian Guerrero
    Christian Guerrero

    The Sience in school is way more boring but this is sience class is way more intresting

  • Cookin' With Lil'
    Cookin' With Lil'

    Wow, I was not expecting to understand that, but I did. Nice job Mark

  • BlackNinja BS
    BlackNinja BS

    What's the difference between v (= velocity) and a (= acceleration)?

  • LORDxGOKU
    LORDxGOKU

    a nerveus man

  • WIDave0311
    WIDave0311

    *_What the heck is going on there?_*

  • Noel Ayanah
    Noel Ayanah

    When Mark becomes a HS Physic teacher, I'm DEF going back to school. Do I care that I just graduated college and I'm in my 20s? No. Do I care that I actually sucked at physics in high school? No. Will I be old as Methuselah sitting in a high school class with my backpack and notebook? Yes, yes I will.

  • dynamite gamer
    dynamite gamer

    oil is hevier than water lol

  • David Anderson
    David Anderson

    Haha if he’s a science teacher/physics if the people know him on yt they will go crazy but he would make the classes so fun

  • block bear studios
    block bear studios

    So hydrogen would also make ur voice higher?

  • kay
    kay

    “im scared of public speaking” **wants to be a high-school teacher**

  • Harmony Quinn
    Harmony Quinn

    Freedom Units 💀

  • Grifmister
    Grifmister

    I learn more from your channel than I do in school

  • pepsiVFX
    pepsiVFX

    my mind is overgrowing...

  • The awesome person Street
    The awesome person Street

    Loving the education love since.

  • Cody Thornburg
    Cody Thornburg

    Thank you!

  • Agosto Madden
    Agosto Madden

    Please consider subscribing

  • Henry Dwyer
    Henry Dwyer

    Your way better than my teacher i learn so much from you

  • Angel Jonguitud
    Angel Jonguitud

    ;)

  • Challenge Accepted
    Challenge Accepted

    YOU CHEATED MAWK WOBER!

  • Challenge Accepted
    Challenge Accepted

    A

  • Sven's History Lab
    Sven's History Lab

    19:21 Mark Rober: help connect to others by making livestreams three times a week. Collin Furze: makes a six-foot tall corona-cycle

  • Luke Borho
    Luke Borho

    9:31 is crazy!

  • The Sharks
    The Sharks

    30:05 Did he just give MrBeast a shoutout thinking he is "not well known"?

  • Venasai
    Venasai

    I want mark to become my science teacher lmAo

  • Pratyush Badrinath
    Pratyush Badrinath

    He explained low mass / high mass and low area / high area without substituting and dividing. HE IS THE BEST PHYSICS TEACHER EVERRR

  • Lizz Thatvegan
    Lizz Thatvegan

    I can guarantee I would have passed science if you were my teacher. I hope your dream comes true because I think you could help influence younger people to pursue science. It took me until age 35 to not be afraid of it and part of that is because of your videos so...thank you for being awesome.

  • MrChickinMan
    MrChickinMan

    i love how the whole comment section is mainly about mark as a physics teacher, how he says his dream job is to be a high school physics teacher even though he used to work at nasa, and how he hates public speaking

  • Luke Ford
    Luke Ford

    I would actually do my homework

  • Kian
    Kian

    Who is still rewatching it in 2021?

  • Roselle Nuñez
    Roselle Nuñez

    the only online class i would like to attend

  • Kakashi Hatake
    Kakashi Hatake

    I never sucked helium EVER AND IM MAD AND REALLY SAD ABOUT THAT

  • Dia
    Dia

    1 year later.......hello.

  • Cunt
    Cunt

    You would definitely be the best physics teacher.

  • The Swarm Clan
    The Swarm Clan

    When your teacher does a whole topic on this and mark covers it all in 10 minutes 🤔

  • Pacey Hoskins
    Pacey Hoskins

    how cool would it be if mark was your teacher

  • heavygar
    heavygar

    at 17:33 merica

  • Leah Dunley
    Leah Dunley

    True! If he was a science teacher then I would not be bored at all ever!

  • BRAYAN PLACK
    BRAYAN PLACK

    fun fact it took the horn 11 secands to get to them

  • VINCENT VELASQUEZ
    VINCENT VELASQUEZ

    Cool

  • BRAYAN PLACK
    BRAYAN PLACK

    yeah kids do ask why alot

  • Thebest Day
    Thebest Day

    I wish he were my physics teacher, class would be so fun

  • YUNUS PIRIM
    YUNUS PIRIM

    if mark loves the word why then the world will be: why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? :)

  • YUNUS PIRIM
    YUNUS PIRIM

    mark should make M.R.F.R. (mark rober physics robot)

  • Ishuman Chaudhary
    Ishuman Chaudhary

    Tomorrow's someone's birthday. Dropping a video would be a treat for us, even for the celebration.. Love you Mark. Happy birthday in advance.

  • jdnh47
    jdnh47

    THIS IS NOT THE CORRECT EXPLANATION. First, weight of the air molecules does NOT have much of an effect on the frequency at which vocal chords vibrate. Vocal cords vibrate at a rate primarily determined by the elastic force of the muscle. Think of a pure vs damped oscillator. Damping doesn't change the frequency by much. To change the frequency by even a small, but detectable amount, you'd need a significant change in damping force relative to the elastic force of the vocal muscles, and this simply isn't so. Further, this effect simply can't explain the drastic differences we hear in the video. But if the frequency doesn't change, why do the voices sound so different? First, you need to understand that nearly the entirety of your voice actually comes from resonance. THE VOCAL CHORDS THEMSELVES SIMPLY MAKE A HIGH BUZZING SOUND - kind of like the mouthpiece of a woodwind or brass instrument. IT IS THE SHAPE OF THE INSTRUMENT / YOUR VOCAL TRACT AND HEAD that gives your voice it's primary quality and tone. Now for the final piece of the explanation: A RESONANT CHAMBER RESPONDS TO WAVELENGTH, NOT FREQUENCY. (With your vocal tract and head consisting of many complex resonant chambers). Namely, a resonant chamber will resonate primarily with sounds that have a wavelength that is roughly the same length as it (with a factor 2 or 4 depending on open/closed tube), as well as harmonic wavelengths that are an integer fraction of the fundamental wavelength. THE FUNDAMENTAL (same length as resonant chamber, with a factor of 2 or 4 depending on open/closed tube) WAVELENGTH RESONATES THE MOST, WHILE SHORTER HARMONIC WAVELENGTHS RESONATE LESS AND LESS (the higher the harmonic is). Now consider: WHILE FREQUENCY IS THE SAME, WAVELENGTH GETS LONGER IN HELIUM because the speed of sound is greater (lighter molecules propagate sound faster, and remember relationship that (speed of wave) = (wavelength)*(frequency)). This means that LOWER FREQUENCIES GET FILTERED OUT IN HELIUM BECAUSE THE WAVELENGTH BECOMES TOO LONG TO RESONATE. Likewise, HIGH FREQUENCIES ARE AMPLIFIED BECAUSE THEIR WAVELENGTHS BECOME CLOSER TO / EXACTLY THE FUNDAMENTAL WAVELENGTH FOR A GIVEN RESONANCE CHAMBER. And thus your voice (which consists of many frequencies overlayed) sounds higher with helium because higher frequencies are amplified/resonate more and lower frequencies are suppressed. Also, you can think of it a bit like a high pass filter. Hope this clears things up, because there's a lot of contradicting stuff out on the internet, and I've done a lot of digging.

  • Awesome Guy
    Awesome Guy

    What school are you going to teach at, because I want to enroll in it now!

  • Patricia Anguiano
    Patricia Anguiano

    “5 seconds for every mile in freedom units uh I don’t know what it is in kilometers... ‘America!’” *raises his hand* That had me laughing so hard!

  • Timmeh
    Timmeh

    losrt

  • welkcub nairb
    welkcub nairb

    Can anyone explain the down votes? I do not get it

  • SUBMINALAURA
    SUBMINALAURA

    I learn more in this than i would learn in a single science lesson in class

  • Sean Corbett
    Sean Corbett

    my science teacher is sooooo boring... Mark would make things waaaayyyy better

  • irgikalisca
    irgikalisca

    11:05

  • Heshu Kawi
    Heshu Kawi

    im bout to do my 10th grade exams i saw the first clue and knew what it was. can i just say im very proud of myself :")

  • Daman Singh Chawla
    Daman Singh Chawla

    this is real science

  • Nagarjun Kashyap
    Nagarjun Kashyap

    The balance between a five year old and a PhD is a five and a half year old. Change my mind.

  • Shawn Gillen
    Shawn Gillen

    I’ve been an Architect for 20 years and have loved everything about science my entire life. I had NEVER had someone explain why helium makes your voice higher! I found myself smiling at that “Eureka” moment. My 16 year old son loves everything you’ve ever done and I’m glued to my screen every video as well. Keep up your enthusiasm; it’s addictive.

  • Sean Subando
    Sean Subando

    This is the first time I listen to class

  • Fredbear Adventures
    Fredbear Adventures

    To all scientist If anyone has a class with mark rover Make me trade lives with them

  • Captured with Iphone
    Captured with Iphone

    i have nothing to say other than, wow I LOVE U. like do more of these videos PLEASE:)

  • Arif Zamri
    Arif Zamri

    hey what you're doing ! Respect the class please

  • Charls Insigne
    Charls Insigne

    I'd be lucky if my teacher in science physics is you but dang I live in ph

  • Lynx Majic
    Lynx Majic

    7:30 "There's no fluid" Flap flap 😂😂😂

  • Fick Dich
    Fick Dich

    Why do you have to wait for a qualification? İf anything they have to check how overqualified you are

  • Lilli and Sara
    Lilli and Sara

    Mark: through your computer or phone Me who's watching on an ipad: ;-; why to I exist

  • Lucky 360
    Lucky 360

    I don’t think this is correct. Your vocal cords vibrate at the same frequency for all 3 gasses. The reason your voice is higher with helium is because the speed of sound is faster through that gas due to its lower density (and similar compressibility) than air. This changes the resonances of your vocal tract by making it more responsive to high-frequency sounds, so the low parts of your voice are still there, they’re just not as prevalent as the higher pitch ones with the helium. Someone please correct me if I’m wrong though, this is just what was taught to me in physics.

  • adam king
    adam king

    You are the Keanu Reeves of physics. My daughter loves you and your videos and for that I thank you.

  • Prem Parekh
    Prem Parekh

    Does that mean that speaking with the sulfur gas would be harder? And speaking with the helium gas would be even easier than talking normally? Someone answer lol

  • ting durrans
    ting durrans

    Ur the ONLY one who I would watch teaching physics 1 like = 1 person that agrees

  • ting durrans
    ting durrans

    I love how many times Mr . rober kept saying “we’re live”

  • Chuck
    Chuck

    *pre Donald Trump* Americans: "MERICA!! YEEAH" *after Trump* Americans: 17:33 .........merica..

  • Crantrex
    Crantrex

    Like breathing in sulllffuuuuuuuuuuuuuur