SCIENCE CLASS #1- WHY Does Helium Make Your Voice Higher?

Live stream with demos your brain will enjoy where we answer a basic question every time.

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  • FIIIIRSSSST!!!

    Mark RoberMark RoberAasta tagasi
    • 19,95,205th😂😂

      Just MyselfJust Myself11 päeva tagasi
    • What that’s not fair

      JustABob YTJustABob YT15 päeva tagasi
    • Omg lol

      killakira12killakira12Місяць tagasi
    • You would be a amazing physics teacher mark rober!!!!!!

      Kayliegh's KornerKayliegh's KornerМісяць tagasi
    • 13,117 person to see this

      HDBRUH7823HDBRUH7823Місяць tagasi
  • Sup mark how are you doing boi

    Vicki SainsburyVicki Sainsbury6 päeva tagasi
  • Hey dude you should make a channel for these types of vid

    Ender RiderEnder Rider9 päeva tagasi
  • I know all this but i still watched the whole video

    Sci F 778 Mansi SaraiyaSci F 778 Mansi Saraiya10 päeva tagasi
  • be my science teacher or piggy will catch you

    AwesomeKidAwesomeKid11 päeva tagasi
  • umm probably nobody will see this but ima ask this question how come u see really flat rocks then u see wierd shaped rocks???

    Megan A.Megan A.14 päeva tagasi
  • 23:30 Because Heavier things totally fall faster

    jamcdonald120jamcdonald12017 päeva tagasi
  • Is another class gonna happen? I wanna be in

    Derek Rodriguez NievesDerek Rodriguez Nieves17 päeva tagasi
  • im pretty sure EVERYONE would love him as there teacher

    ಥ_ಥ CGಥ_ಥ CG18 päeva tagasi
  • 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).

    Scott BorrorScott Borror22 päeva tagasi
  • Just become a teacher

    Sabina KCSabina KC24 päeva tagasi
  • 15 minutes huh

    Sabina KCSabina KC24 päeva tagasi
  • Love how you do your vids! Why are people ticklish, can we not be ticklish, and is everyone ticklish?

    tickler1983tickler198325 päeva tagasi
  • This guys is a genious at explaining things. I fricking love him.

    Darsshan MDarsshan M27 päeva tagasi
  • The pretty writer unprecedentedly search because silica concurringly form between a wise windscreen. unused, lamentable orange

    My SmirfMy Smirf28 päeva tagasi
  • 0:50 sounds like a vampire

    Neil WadhiaNeil Wadhia29 päeva tagasi
  • Yo be my high school teacher!!

    Hannah RichHannah Rich29 päeva tagasi
  • Imagine mark is your physics teacher, everything make sense and you like science

    Kenza RezyarifinKenza RezyarifinМісяць tagasi
  • Dude I wish you were my teacher, you mange to make everything interesting I would not get bored

    A•F•N•N•I•A•M•F•EA•F•N•N•I•A•M•F•EМісяць tagasi
  • Can't believe its already been over a year.

    Andrew XiaoAndrew XiaoМісяць tagasi
  • So is there any sound in space?

    Arthur BirckArthur BirckМісяць tagasi
    • There are no particles for the sound vibrations too travel through

      Hamza AhsanHamza AhsanМісяць tagasi
    • No

      Hamza AhsanHamza AhsanМісяць tagasi
  • The Sience in school is way more boring but this is sience class is way more intresting

    Christian GuerreroChristian GuerreroМісяць tagasi
  • Wow, I was not expecting to understand that, but I did. Nice job Mark

    Cookin' With Lil'Cookin' With Lil'Місяць tagasi
  • What's the difference between v (= velocity) and a (= acceleration)?

    BlackNinja BSBlackNinja BSМісяць tagasi
  • a nerveus man

    LORDxGOKULORDxGOKUМісяць tagasi
  • *_What the heck is going on there?_*

    WIDave0311WIDave0311Місяць tagasi
  • 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.

    Noel AyanahNoel AyanahМісяць tagasi
  • oil is hevier than water lol

    dynamite gamerdynamite gamerМісяць tagasi
  • 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

    David AndersonDavid AndersonМісяць tagasi
  • So hydrogen would also make ur voice higher?

    block bear studiosblock bear studiosМісяць tagasi
  • “im scared of public speaking” **wants to be a high-school teacher**

    meme2 місяці tagasi
  • Freedom Units 💀

    Harmony QuinnHarmony Quinn2 місяці tagasi
  • I learn more from your channel than I do in school

    GrifmisterGrifmister2 місяці tagasi
  • my mind is overgrowing...

    Yixuan YanYixuan Yan2 місяці tagasi
  • Loving the education love since.

    The awesome person StreetThe awesome person Street2 місяці tagasi
  • Thank you!

    Cody ThornburgCody Thornburg2 місяці tagasi
  • Please consider subscribing

    Agosto MaddenAgosto Madden2 місяці tagasi
  • Your way better than my teacher i learn so much from you

    Henry DwyerHenry Dwyer2 місяці tagasi
  • ;)

    Angel JonguitudAngel Jonguitud2 місяці tagasi
  • YOU CHEATED MAWK WOBER!

    Challenge AcceptedChallenge Accepted2 місяці tagasi
  • A

    Challenge AcceptedChallenge Accepted2 місяці tagasi
  • 19:21 Mark Rober: help connect to others by making livestreams three times a week. Collin Furze: makes a six-foot tall corona-cycle

    Sven's History LabSven's History Lab2 місяці tagasi
  • 9:31 is crazy!

    Luke BorhoLuke Borho2 місяці tagasi
  • 30:05 Did he just give MrBeast a shoutout thinking he is "not well known"?

    The SharksThe Sharks2 місяці tagasi
  • I want mark to become my science teacher lmAo

    VenasaiVenasai2 місяці tagasi
  • He explained low mass / high mass and low area / high area without substituting and dividing. HE IS THE BEST PHYSICS TEACHER EVERRR

    Pratyush BadrinathPratyush Badrinath2 місяці tagasi
  • 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.

    Lizz ThatveganLizz Thatvegan2 місяці tagasi
  • 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

    MrChickinManMrChickinMan2 місяці tagasi
  • I would actually do my homework

    Luke FordLuke Ford2 місяці tagasi
  • Who is still rewatching it in 2021?

    KianKian2 місяці tagasi
  • the only online class i would like to attend

    Roselle NuñezRoselle Nuñez2 місяці tagasi
  • I never sucked helium EVER AND IM MAD AND REALLY SAD ABOUT THAT

    Kakashi HatakeKakashi Hatake2 місяці tagasi
  • 1 year later.......hello.

    DiaDia2 місяці tagasi
  • You would definitely be the best physics teacher.

    CuntCunt2 місяці tagasi
  • When your teacher does a whole topic on this and mark covers it all in 10 minutes 🤔

    Swarm Gam3rSwarm Gam3r2 місяці tagasi
  • how cool would it be if mark was your teacher

    Pacey HoskinsPacey Hoskins2 місяці tagasi
  • at 17:33 merica

    heavygarheavygar2 місяці tagasi
  • True! If he was a science teacher then I would not be bored at all ever!

    Leah DunleyLeah Dunley2 місяці tagasi
  • fun fact it took the horn 11 secands to get to them

    BRAYAN PLACKBRAYAN PLACK3 місяці tagasi
  • Cool

    VINCENT VELASQUEZVINCENT VELASQUEZ3 місяці tagasi
  • yeah kids do ask why alot

    BRAYAN PLACKBRAYAN PLACK3 місяці tagasi
  • I wish he were my physics teacher, class would be so fun

    Thebest DayThebest Day3 місяці tagasi
  • 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 PIRIMYUNUS PIRIM3 місяці tagasi
  • mark should make M.R.F.R. (mark rober physics robot)

    YUNUS PIRIMYUNUS PIRIM3 місяці tagasi
  • 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.

    Ishuman ChaudharyIshuman Chaudhary3 місяці tagasi
  • 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.

    jdnh47jdnh473 місяці tagasi
  • What school are you going to teach at, because I want to enroll in it now!

    Awesome GuyAwesome Guy3 місяці tagasi
  • “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!

    Patricia AnguianoPatricia Anguiano3 місяці tagasi
  • losrt

    TimmehTimmeh3 місяці tagasi
  • Can anyone explain the down votes? I do not get it

    welkcub nairbwelkcub nairb3 місяці tagasi
  • I learn more in this than i would learn in a single science lesson in class

    SUBMINALAURASUBMINALAURA3 місяці tagasi
  • my science teacher is sooooo boring... Mark would make things waaaayyyy better

    Sean CorbettSean Corbett3 місяці tagasi
  • 11:05

    irgikaliscairgikalisca3 місяці tagasi
  • 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 :")

    Heshu KawiHeshu Kawi3 місяці tagasi
  • this is real science

    Daman Singh ChawlaDaman Singh Chawla3 місяці tagasi
  • The balance between a five year old and a PhD is a five and a half year old. Change my mind.

    Nagarjun KashyapNagarjun Kashyap3 місяці tagasi
  • 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.

    Shawn GillenShawn Gillen3 місяці tagasi
  • This is the first time I listen to class

    Sean SubandoSean Subando3 місяці tagasi
  • To all scientist If anyone has a class with mark rover Make me trade lives with them

    Fredbear AdventuresFredbear Adventures3 місяці tagasi
  • i have nothing to say other than, wow I LOVE U. like do more of these videos PLEASE:)

    Captured with IphoneCaptured with Iphone3 місяці tagasi
  • hey what you're doing ! Respect the class please

    Arif ZamriArif Zamri3 місяці tagasi
  • I'd be lucky if my teacher in science physics is you but dang I live in ph

    Charls InsigneCharls Insigne3 місяці tagasi
  • 7:30 "There's no fluid" Flap flap 😂😂😂

    Lynx MajicLynx Majic3 місяці tagasi
  • Why do you have to wait for a qualification? İf anything they have to check how overqualified you are

    Fick DichFick Dich3 місяці tagasi
  • Mark: through your computer or phone Me who's watching on an ipad: ;-; why to I exist

    Lilli and SaraLilli and Sara3 місяці tagasi
  • 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.

    Lucky 360Lucky 3603 місяці tagasi
  • You are the Keanu Reeves of physics. My daughter loves you and your videos and for that I thank you.

    adam kingadam king3 місяці tagasi
  • 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

    Prem ParekhPrem Parekh4 місяці tagasi
  • Ur the ONLY one who I would watch teaching physics 1 like = 1 person that agrees

    ting durransting durrans4 місяці tagasi
  • I love how many times Mr . rober kept saying “we’re live”

    ting durransting durrans4 місяці tagasi
  • *pre Donald Trump* Americans: "MERICA!! YEEAH" *after Trump* Americans: 17:33 .........merica..

    ChuckChuck4 місяці tagasi
  • Like breathing in sulllffuuuuuuuuuuuuuur

    CrantrexCrantrex4 місяці tagasi
  • Mark: my dream job was to be a highschool teacher Also mark: doesn't like public speaking

    Dreanne MusicDreanne Music4 місяці tagasi
  • helium is lighter than air

    Magnús Ari GuðmundssonMagnús Ari Guðmundsson4 місяці tagasi
  • Ty from Dude Perfect sucked in sulfur hexafluoride for DP's 2019 tour Cool Not Cool!

    Rumples & ThingsRumples & Things4 місяці tagasi
  • Left the mouse on the screen when playing a video like any teacher would.

    Michael DombroskieMichael Dombroskie4 місяці tagasi
  • Never been interested in this things, just curious BUT I love how this guy explains! I’ll be here if he drops more classes :)

    Verzo MusicVerzo Music4 місяці tagasi
  • I love how ppl with high voices actually have stronger muscles than ppl with low voices

    Eli AdestEli Adest4 місяці tagasi
    • I'll ignore the fact it's just vocal cords

      Eli AdestEli Adest4 місяці tagasi
  • Wait... in 10:02 he says that oil is heavier than water and it sinks. But is should not be exactly the opposite ?

    Si CiSi Ci4 місяці tagasi
  • Pls

    me wolfFNme wolfFN4 місяці tagasi