FIIIIRSSSST!!!

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.

This is the first time I listen to class

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

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

A simple explanation: Sound, is air vibrations that your eardrums hear. Sound is slower than the speed of light, and if anything exceeds the speed of sound, it creates a sonic boom. Your vocal chords create vibrations that create air vibrations to bump into molecules. Helium makes your vocal chords easier to move, making it high pitch. Sulfur hexafluoride makes the vocal chords move slower, making it lower pitched.

hey what you're doing ! Respect the class please

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

7:30 "There's no fluid" Flap flap 😂😂😂

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

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

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.

i luv u mark rova

"we're live" -Mark Rova 2021

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

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

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

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

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

Like breathing in sulllffuuuuuuuuuuuuuur

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

helium is lighter than air

Ty from Dude Perfect sucked in sulfur hexafluoride for DP's 2019 tour Cool Not Cool!

Left the mouse on the screen when playing a video like any teacher would.

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

I love how ppl with high voices actually have stronger muscles than ppl with low voices

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

I'm watching this while I'm taking science class

Pls

Watching science while in online science class while doing a science test...bruh.

I think its live

13:47 a moment of silence for headphone users...

Dude I wish u was my teacher

I got so interested even though i hate science.He is a great teacher

Who else misses these videos?

I love his enthusiasm

As a Christian, it hurt to hear him say the Big Bang is real

He's so nice! And heck! I could understand!

i love all of your videos

I have been enlightened

It was cool

0:49 this is how kidnappers sound like on a phone call

Wish I would of had you as an instructor. Entertaining and enlightening.

My school does not tech this in junior high idk about high school but keep up the good work

This is the only class I will accept

Did my man just pour invisible gas into a beaker a just light off a fire with it. Now that's insane!!

Plz start these again......This is great

i understand it now kinda well i think i know the most of it thanks

If you're nervous, you got my back

I am in Sri Lanka but I don't care

Mark, I love your classes 😊😊🎆🎆🎉🎉

this is much better than my science 🧪 class

It is awesome

Why would 1.1 k people dislike this

I'm having a science class while in math class. I'm paying attention to Mark, not my math teacher.

I wish you were my physics teacher. I wouldn't have failed.

Lol Mr beast and Chandler 😂😂

I liked the fact I knew most of this but I didn't put 2 and 2 together (at like 35 mins was an "ohhh" moment) - I'm a gcse student, anyway thanks I also dislike public speaking 😊

@ 13:40 rip headphones users

i love this channel

How do I make my voice deeper without that sulfur? Cause Im a teen and I sound like a nine your old.

The fact that I already knew this, and he still managed to engage me and blow my mind really says something

Xenon and krypton(and argon) make your voice go lower(radon is toxic and radioacive)

Please make more Mark. This is excellent for lockdown 🇬🇧

Who feels like he needs to be a physics teacher, I’m new so I don’t know if he already is.

Everyone's wish is to have a teacher like him🔥💯

me watching physics to help me sleep: marks air horn: HRRRRRRRRRRRRRR

bro i wanna do science my least favorite subject besides social studies

So i assume hydrogen would make it go higher, but is a little unsafe because its not a noble element...

Mark CASUAlly becoming a teacher

Love from India you are so great

I’m in elementary school BUT WHO CARES

It would be nice if youd try to implement SI units in your explanations. Otherwise I really enjoy these classes.

you trash

you good

this reminds me of Zoom (PBS Kids), thank you so much!!!

Please never stop

I want way more classes

OMG If I had ONLY had a Physics teacher who was this much fun...

10:03 You just accidentally said the inverse of what's true, Water is heavier than Oil. Ofcourse not a big deal but you could correct it in the subtitles.

Mark Rober talking about how he is talking while talking. Mind Blown

If Mark was my science teacher, I would never fall asleep

OK so the big bang never happened God created everything Mark Rober you are very smart and I feel that you should know that God created everything.

I came back to this because I got my hands on a helium ballon and almost passed out taking the whole thing :)

Cool tip the quicker after the lightning the thunder is the closer it is

Pls be my teacher!!!!!!

100% not clickbate

I’m 10 and I under stand every single bit of this video

@Mark Rober, can you please make a video explaining rotational kinematics 🙏🙏

WAIT WHAT HAHAHAHHAHA 16:33

If he is my science teacher I will be a topper

Why do you reflect when you look at a mirrror?

“Teaching HS Physics is my dream job” ..... I am failing Physics right now, not because I don’t like it but because my teacher *sigh* just isn’t the best. I would absolutely just love it if you were my Physics teacher. If that could happen in some alternate universe, you would make me the happiest person ever. Your videos are the reason I’m not giving up on Physics. Seeing your videos and passion about how the world works is super inspiring and exciting:). So yes. Please become a Physics teacher. You would change so so so many students lives. Best of wishes as you pursue getting certified and all that:).

Ngl this is a great idea I can’t believe I wasn’t here for it live

Science was one of my weakest subjects in school, but as soon as you revealed clue 3, I had an aha! moment😃

watched this on double time... mind blown!

Guy who worked in NASA: Teaching high school is my dream job!

i used to think helium was everywhere and i sucked air and talked expecting to sound high pitched but instead was normal, so then i sucked more and tried again...

I'm so sad that I missed this its so cool and informative......😞💕💕💕

WATH do i do to Mack a robot Mark i know you workt at nasa