Liquid Oxygen (slow motion) - Periodic Table of Videos
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- เผยแพร่เมื่อ 5 ก.พ. 2025
- Dropping hot charcoal into liquid oxygen - filmed with a high-speed camera.
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From the School of Chemistry at The University of Nottingham: www.nottingham....
Periodic Videos films are by video journalist Brady Haran: www.bradyharan....
Brady's other channels include:
/ sixtysymbols (Physics and astronomy)
/ numberphile (Numbers and maths)
/ backstagescience (Big science facilities)
/ philosophyfile (Philosophy stuff)
Watch videos about EVERY element: bit.ly/VT9nNZ
Reactions filmed with a Phantom Miro. We used this: www.visionresea...
Special thanks to Destin from Smarter Every Day for helping us out: / smartereveryday
Music by Alan Stewart - / alankey86
I think we are watching the solid analogous of the Leidenfrost effect. Most extraordinary!
As a chemical engineer who is doing PhD investigating mixing and fast chemical reactions, I loved your video. Thank you Brady and Prof. Poliakoff.
You poked his ego with that physics question. I think he really wants the interesting part to be the chemistry, but at least he realized how the blending of physics and chemistry is quite a beautiful thing.
He was quiet for a moment. But I think both he and others can agree that both fields have a great deal of value. You cannot be part of one without acknowledging the other
The music goes together really well with this. It makes the whole thing really beautiful.
Chemistry is essential Physics. Electrical bonds and energy among other things.
I like the over exposed footage. Its great not only seeing the reaction, but also the explanation of what the reaction happens and slow motion is the best way of doing this as you can learn so much by watching the slow motion footage that you wouldn't have seen in real time.
Oh no, they spilled oxygen all over the place! Now who's gonna clean all that oxygen up afterwards? :-p
Lungs
@@Preinstallable great now we have more CO2 😭
Rarely has 1080p been more justified, and appreciated. Great video!
This professor is awesome, so lovely. All my respect!
I love how you do your slow motion videos. It's not just "oh, here's this in slow-mo, okay, have a good one bye." You explain what's going on and give the video amazing commentary. I'd take a chemistry class under you anytime.
Now this guy looks like science
As an aspiring Chem E (third year student), this video made me full of joy. Thank you for explaining something so simple in a different light, it made me think for a while.
I think chemistry and physics are very related because the quantum physics of the electron determine orbitals and, by extent, chemical properties.
Meaning my love for chemistry and my hate for physics is indeed ironic :v
@@noisy99_ More like oxymoronic.
periodicvideos, you are pushing the boundaries of scientific understanding with these killer slow-mo videos!
4:27
That face of "TRIGGERED"
Voidler 😂😂😂
That's what I thought too but am having a really hard time figuring out why. Was he thinking "is this guy stealing my limelight?" What triggered him?!
My assumption is that usually you can't just tell a chemist that physics is more interesting and live to tell the story :)
Yes it is. You can see it in the bottom of the description.
I subscribed to him yesterday, and I have been loving his videos since.
4:30 ALL science, including chemistry, is, at its most fundamental, just physics.
+Eric Taylor Didn't you say that exact same thing four months ago?
RonJohn63
All science, including chemistry is, at it's most fundamental is physics.
I'll come back in another 3 or 4 months.
Léo Laïchi
Mathematics is used to study science. It is not science itself.
If I crash my car, mathematics causes no damage. All of the damage is caused by physical forces. Those forces can be quantified by math, but they aren't math itself.
+Eric Taylor What's your take on psychology as a science? Say, the behaviourist approach. Is it a science in your eyes?
WubstepUK I would say that it just physics, since everything that occurs in the mind is occurring because of chemical reactions, and those chemical reactions cause and inhibit other chemical reactions, and all chemical reactions are just physics at their most basic level.
Brady and his crew create the most amazing (visually and mentally) videos on TH-cam.
It would be hilarious if you just ended the video at 4:30
Indeed.
***** why ?
Sophia Man the pause and the face
***** i thought the professor would flip the table.
***** then it freeze frame to Sepia tone, it slowly zooms in and says "#fookyou" as caption
I've watched so many of your videos here lately, but this one made me feel especially warm inside. absolutely brilliant.
4:19 the professors face when he hears someone saying physics is more interesting... Lol
Brady, that was the most enjoyable and beautiful video you have produced yet - from the picture quality, editing and music. Keep up the great work.
he looks pretty much what most people expect from a real scientist, hair, glasses and some explosions hahaha
Leidenfrost effect?
+ajuk1 yep
I completely support the addition of music to these videos. Well done Brady.
He looks like the stereotypical mad scientist :)
He is..
I was just going to comment on that😂💔
science is so much more interesting once you leave school and no longer have to learn it as a mandatory part of education. Instead watching it when you want to learn something new makes it seem far more entertaining and easy to understand for me. I really enjoy these videos :)
(4:35) I think that's one of the most beautiful things I've ever seen. On a scale of 1-10, how nerdy does that make me?
3
One of the most awesome slow motion i saw in years.. and the reaction it self is amazing too with the charcoal and the liquid !oxygen
LOL Physics - Chemistry rivalry?!
No
Actually, chemistry is a branch of physics
They are more like sister sciences
I'm done, these videos are just way too damn great, the explanation, the editing, it makes it look perfect
why doest the liquid oxygen explode?
Why would it?
TheUltraDarkEnderMeep oxygen is flammable why isnt liquid oxygen?
+Jack Sullivan its flammable no explosive
but it didn't catch fire either
+Jack Sullivan Oxygen is not flammable, it simply provides the oxidant for the flame
Stunning. Absolutely mesmerizing. Great footage. So marvelous to see it up close and in slow motion.
im not all that knowledgeable in chemistry, so im stuck here thinking how is it that the coal is burning in a liquid!!? i know oxygen is important in lighting a fire but still the fact that it is liquid and burns it, thats crazy to me
That's because you are associating the fire going out with the liquid, when in reality the reason a fire goes out when covered in liquid is partly because it's smothered. Liquid oxygen, on the other hand, cannot be smothered because it IS oxygen.
Try not to think about liquids as anything more than a state in between gas and solids.
Judicial78 especially when you consider droping a buckfull of gas on a fire to stop it, just because the pump deliver it to you in liquid state -.-
well put fitzcard
Chemistry is what's happening.
Physics is how it's happening.
They're so nice to always be complementing each other.
This man looks like science
Saw the thumbnail and then checked to see if I have any cream cheese.
Remember Dr. Junkenstein? This is him now feel old yet?
Moist how tf did memers reach this?
This is one of the most beautiful videos, just for the fact of how nature is at work.
Thumbs up if u wanna see the professor's hair on fire in slow mo.
+Ben David Rofl
Some super super cool nonlinear physics happening there. What looks like embers spiralling away at different speeds along the surface are really neat. So much we've still to learn! Great video!
what if you drank it
+Leafeon It's a cryogenic fluid, so basically the insides of your tubes and such would freeze. Great fun, instant frostbite, extremely nasty way to die.
Amperzand what if your body could withstand the cold, and lets say it goes to your lungs this time
Brady your vids took a real nice turn in terms of picture quality lately. I like it a lot!
Why doesn't the oxygen start burning
???
I for one am thrilled to have you spend more time on your other projects, like, Deep Sky Videos! ;) But don't listen to all the naysayers. These videos are great, and waiting a bit in between them doesn't ruin them at all or lessen the excitement! Keep up the great work!
I would like to say, great choice of music, I think it really conveys a sense of awe.
I'd been so long since a video with Destin I assumed they were all done, Im glad there's more.
Excellent camera work and editing, Brady. Keep up the good work!
You guys should publish a playlist of your high speed footage which includes only the high-speed footage with some ambient music, like as used when watching the slow-mo capture of the charcoal in the liquid oxygen. I think it would be fun to just sort of... lean back and watch these things happen uninterrupted after getting to hear you guys discuss the chemistry and physics of the reaction.
Congratulations on getting your video listed on Popular Science, periodicvideos.
This video just explained the essence of the channel.
It's a regular shaped screen turned sideways (some screens nowadays actually come with a twisting mount that lets you do that, and for quite some time graphics cards' drivers have provide the option to have the screen contents oriented at 90, 180 and 270 degrees)
Not sure if you noticed, but you could see the charcoal turning end on end rapidly as it floated around, and did you also notice the bubbles in the liquid oxygen were all racing towards the charcoal itself when the charcoal got near it?
4:28 I love that he is able to straight out say something like that. There's a sign of a true scientist.
This is actually science at it's lowest level! Very good for childeren to understand how oxygen works :)
Very brave to attempt this experiment, I would think you might get an explosion, but no it's a magical dance, great stuff !!
I love how when the charckle is inside the liquid oxigen it burns so quickly that it looks like it's not slow motion, but the moment the charckle leaves the liquid, it goes back to burning in a normal slow motion-looking fasion
sounds like a great experience I've always enjoyed biology most but learning about the other sectors of science is so much more enjoyable and entertaining since I can choose when to do it.
ive always been more interested in the physics of chemistry than chemistry. love this!
The slow-motion is amazing. Great job!
Very nice music by Alan. And the overexposed bit is really cool!
Brady has made a Slow motion Chemistry playlist. If you go to the periodicvideos youtube page you will see the list
great job!
With that long pause after the question, I was almost expecting him to say "... GET OUT!"
Hahaha.. How great would that have been?
I always wonder, when reading many comments posted on videos like this, if anyone thought for a second, to post something about the video itself. Comments on the actual video, which is stunning and very interesting, would probably be the best posts here? I agree with Vishva.
Just finished school, yet here I am. I love you science
Chemistry and physics is sooo beautiful.
that was beautiful
great job brady
Destin sent me. Love the work man. Love and science
some one should start paying brady for all this. How can i help make a contribution brady? Your videos dont show many of the actual maths behind it but it has definitely reduce the idea to its most important aspects and i have done the extra research needed to fully understand what is going on.
Thanks for giving me something awesome to talk about at work tomorrow!
What a breathtaking video.
I don't really care if destin don't do science, as long as I watch his videos and I understand then I will like it
How are there 18 dislikes? This video poses no matter of opinion and is really educational...
Brady do you actually use these videos for education or is it just for youtube? I'm constantly amazed at how good this is, compared to the relatively low view count!
Fascinating stuff as always.
People like you make me feel so smart!
i always thaught the mist was the gas from the evaporating liquid but it's awesome how it's the air around the liquid condensing, i guess we do learn something every day :)
The over-exposed out take is beautiful
O is a radical species (meaning it has unpaired electrons) and so it naturally tends to bond covalently with neighbouring atoms, in this case other O, to produce O2, regardless of temperature
The screen is just normal screen turned 90° clockwise. You can see the logo on the left side of it. (and the text is normal windows screensaver.) Fun tip: try pressing CONTROL and ALT, and then press one of the ARROW keys :)
You'll all be singing a different tune about this video when we are on our last tank of breathable oxygen.
All they needed was about 56 mL for a complete reaction but the volume differences between the oxygen and charcoal made the "cloud floating" visual more apparent.
Thanks for the video, always enjoy them.
Definitely one of his most beautiful videos, even though I didn't quite love the sound. :p
I LOVE the boiling oxygen though, the small bubbles and pockets of vaporizing oxygen look fascinating.
I think Professor Poliakoff showed his class there. Instinctively we'd all defend our "baby", and it does look like his first gut reaction is negative, but then he stopped talking, thought sincerely about the question for a few seconds, and replied most excellently. I'm very impressed.
splendid. long live the professor!
Dr. Poliakoff is so cool. I love watching his videos. :)
If I had liquid oxygen in a cauldron, I could pretend to be a wizard.
This is my favorite Neil experiment!!
Quick question - did you heat the charcoal in any way (or do anything to it) before you dropped it in, or is it literally just room temperature charcoal and liquid oxygen? Sorry if it's a silly question, I may have missed something in the video
This guy has a awesome job!
At 2:06 something appears that looks a lot like what is seen at the shock front from explosives. It is over very quickly, but it can definitely be seen exiting the top left and right corners.
I can't decide if it is a very small shock wave...which seems unlikely, or if it is related to the reflection in the bowl walls of the flame initiation affected by the ripple on the surface.
Anyone have some insight?
This video was very interesting and I learnt a lot.
Very beautiful, and enlightening.!
And to add to my previous comment: you can't do stuff like this for longer periods of time because it will lower the temperature of your mouth causing the vapor emission to decrease. You'll get frostbitten if you're too daring. The Leidenfrost effect can be observed in mundane situations as well; just heat a skillet to a high temperature and pour some water on the hot skillet. You'll see that the water doesn't instantly evaporate but rather "floats" on the surface of your frying pan.
Charcoal is less than half as dense as liquid oxygen so it will float anyway. I think the Leidenfrost Effect causes the bouncing that we see - as the charcoal lump nears the oxygen, evaporation and combustion increase, pushing it away again.
Awesome! Destin is absolutely brilliant! Though I thought he lived in the U.S., does he come to the U.K. just to film? Sorry, I never really read descriptions. I should probably start doing that. =P
Is it possible to upload the entie slow-mo video of the charcoal and liquid oxygen with the background music? It's so calming to watch :D
I always thought that pure oxygen was very dangerous to have around an open flame, but this seems to be fairly safe (though i'm sure you took plenty of precautions). Is it different for liquid oxygen than gaseous oxygen? Both are present right? It seems like the oxygen in liquid form isn't dangerous and doesn't fuel the flame until it is gaseous...right? Is that what you are teaching with this experiment?