For those playing along at home for these 118 videos, your repeating cast of characters is: Professor Sir Martyn Poliakoff (mad, famous chemist - Oxford accent), Professor Pete License (chemist - Welsh accent), Associate Professor Deb Kays (junior chemist - cute accent), and... Neil (whose position and accent I am unable to identify, though via his age and experience he appears to be the Chief Lab Assistant or some such, though this may be a running joke). As of 2019 all three profs still work at Nottingham. There's also another younger male Professor with short hair who appears in these videos frequently, but I am unable to identify: he's got his own office so he's clearly a prof.
These videos are TREASURE! I had always found chemistry boring and my brain just automatically shut down when I saw lots of chemical formulas. So I was searching for chem videos that can help me get asleep. Then I found these videos. Now an hour has passed and I am still awake enjoying these magic-like chemical reactions and knowledge. Thank you so much broadening my understanding of the world and leading me into the wonderful chemistry world!
😅 right till now we did know this type of explanation with practical also existed for about 15 years and we are realising it now. Chemistry is far more interesting when a knowledgeable man teaches our teacher just told us to memorize and never explain any things. But still find it on the right 👍 time 😊 thank you!
About the balloon burning, you can see the balloon parts move out of the way before it burns. Yes, hidrogen does give off a temperature regulated color from faint red to a bright yellow (see shuttle engines). Great stuff, thanks!!!
A very concentrated mixture of hydrogen and oxygen may react (or detonate) with almost no color whatsoever (UV radiations are emitted). However, in the case of low pressure hydrogen burned in air, the reddish/pink color is normal due to the Balmer series emission lines of hydrogen atoms (temperature and therefore energy dependent).
I tend to agree with you, but I don't think it is the entire Balmer series as a hydrogen discharge lamp is purple. The lowest energy Balmer line is red. So there is just enough energy to excite to the n=3 level?
Well, in our lab, hydrogen burned in air is *completely* colorless. It's actually when we mix in oxygen that the torch turns a light blue color. So I'm not sure your explanation makes sense to me. Who knows
I've watched more than a dozen video on this channel, this is the first time I've heard Neil speak :O His "silent sidekick" role is so iconic in the rest of the series that it was a little surreal to hear his voice
I graduated school right around the time these sorts of videos started becoming common, so i just missed the opportunity. Now you can easily google this stuff or if you have problems in school you can google the questions and find explanations.
Visual learner, huh? Yeah, that's rough. I'm one of the lucky ones who learns best from reading, so I used to resent having to go to lectures because I could just go home and learn from the textbook. It's a shame schools aren't flexible enough to let everybody learn the way they learn best.
I used to suck at chemistry and physics back in school. Now because of my career I am really into it. I wish I had paid more attention all those years ago, chemistry and physics are awesome. Biology is awesome too but i don't really care about it so much :p
5:50 the Prof. starts talking about nuclear fusion and it's possibilities for clean energy. It is now 2020 and the world's first nuclear fusion reactor is being built. What a time to be alive!
The info about fusion reactions is a little bit off: 1) Simple proton-proton fusion is possible, releases energy, and is necessary for stars to work. It is just much more difficult because it requires one of the protons to randomly turn into a neutron while the protons are extremely close to each other (and also because the electric repulsion between the two nuclei is larger compared to their masses). 2) When two deuterium nuclei fuse, the normal result is not Helium 4, but rather either "Tritium", AKA Hydrogen 3 (one proton and two neutrons), or Helium 3 (two protons and one neutron). In the former case, one of the two protons is emitted (a normal hydrogen nucleus); in the latter case, a neutron is emitted. (This neutron will either fuse with another atomic nucleus or, if it continues to fly away for a few minutes, will eventually decay into a proton and an electron.) 3) Hydrogen bombs usually use deuterium-tritium fusion, not deuterium-deuterium fusion, although that does technically also happen when they explode, as does tritium-tritium fusion, and, to a much lesser extent other types of fusion. There are also thermonuclear bombs that use lithium isotopes.
This is what they should teach in the schools, and not all the useless stuff they currently teach. That goes for the whole series, not just for this particular video.
it's amazing how I've lived for 19 years and only started to learn chemistry. all those years i have failed to notice the most beautiful field of knowledge.
Watching this as a learning tool for upcoming Chemistry Olympiad I know nothing about chemistry and I want to study physics, but my teacher said “You’re going to the regional round.” There is supposed to be a in-lesson experiment, so I hope I don’t blow myself up. Anyways, nice videos!
Dmitry Ivanovich built a table according to atomic weight, and he was right, because. atomic weight characterized the element completely, so to speak. This characteristic implicitly included both the periodicity and the charge of the nucleus. But someone collected the lanthanides after him in one line and placed them below the table. And Mendeleev had cerium after lanthanum. Now after lanthanum there is hafnium, and this is a gross mistake because, according to the atomic weight, it, hafnium, should be located on the line below. Elements 72-75 and 108-111 are omitted, starting with hafnium, the charges of the nuclei have changed. After Mendeleev, the era of quantum mechanics began and its periodicity fit beautifully for many elements. Then it turned out that the main feature of the element is the charge of the nucleus. Before you is a table built according to the charges of the nuclei of atoms.
Ignite a balloon filled with hydrogen and you get a nice WOOMPH! Fill the balloon with a mixture of hydrogen and oxygen and you get a deafening BANG! I saw a demonstration of this once. The prof used soap bubbles instead of balloons. He also popped a piece of dry ice into his mouth to see if it tasted sour, as you would expect. Quoth he, "Never do that, by the way." Strange fellow...
Per NASA hydrogen didn't fireball in the Challenger accident. They stated the plume was illuminated by the SRB's and the craft imploded due aerodynamic forces. At the time I was under the belief that hydrogen ignited with contact with Oxygen, so I was puzzled. That seems to be supported by the large cloud that lingered for some time afterwards.
About 0.00000000000001% of the volume of a hydrogen atom is taken up by the proton. Hydrogen gas at STP has a density of about 0.07. The density of the proton is about 100,000,000,000 which is little bit more than the density of the most dense naturally occurring element, osmium which is 22.5. A margarine tub of protons would weight about 50,000,000,000 tonnes, which I suppose is quite a lot.
I remember filling a small balloon when I was 15. I did it downstairs. I lit it and the explosion was really loud. I felt the shock wave going through my body. Various objects were vibrating for 10 sec after it explosion.
2:20 please tell me someone else saw that the detonator box was built by none other than "ACME" corp.. LOL im not expecting this to go well>...where the coyote when you need him? LOLOLOL
@Nevir The mug is at the front of the desk and the ball is set toward the back. He drinks from that cup in one of the alcohol related episodes, and it's your average size coffee mug.
What I wonder is; That both Hydrogen and Oxygen, when isolated, are fuel sources for fire - so how is it that when combined to make H2O (water) they are able to extinguish a flame ?
because the energy released in a typical combustion reaction isn't strong enough to break the bonds in an h2o molecule. And how water is extinguishing a flame is by reducing heat and saturating the combustion fuel source. for instance, once wood is wet, the air pockets in the wood are filled with water which as we no is not combustible with simply heat and ignition.
1) The properties of a compound are usually unrelated to its components. Sodium Chloride is not a metal, nor poisonous, nor highly reactive. 2) Neither element, when *isolated* is a fuel source. Hydrogen will combust in the presence of oxygen, creating water.
Most Awesome Playlist Idea. Im Saving It. Brilliant. i guess Other Streams Would Learn From This Playlist; Biology, ParticlePhysics etc channels. Thanks
I totally love 💕 Periodic Videos ! And I'm really listening to the Professor with a great respect! And to the Side wing 🍗 always ! Which is buff in explanation of the practice ❤😅 Lovely 🌹
😅 right till now we did know this type of explanation with practical also existed for about 15 years and we are realising it now. Chemistry is far more interesting when a knowledgeable man teaches our teacher just told us to memorize and never explain any things. But still find it on the right 👍 time 😊 thank you!
I love that the professor's models are always dog toys. Without fail, when I'm confused about the object he's showing to the camera, I ask myself, "could that be a dog toy"? The answer is always, "yes that's definitely a dog toy".
Chornobyl was not a hydrogen-and-oxygen explosion, it was a steam-explosion, like when an over-pressurized water-heater explodes. Challenger wasn't a hydrogen-and-oxygen explosion until AFTER the initial explosion, which was a failure of the solid-rocket-booster seal. The last major example of a hydrogen+oxygen explosion was during Fukushima Daiichi. Before then, the most recent example of a hydrogen+oxygen explosion that I can think of would be the Hindenberg.
My favorite demo from high school physics was when the teacher put a coffee-can full of hydrogen at the back of the classroom, with a pinhole in the top and a larger hole at the bottom. He lit the hydrogen coming out the top, and it simply burned like a candle. He then started the lecture for the day. About 5 minutes later, there was a tremendous BANG! from behind us. When the air coming in at the bottom increased the oxygen/hydrogen ratio in the can to 1:2, the reaction sped up a bit.
That's amazing, I didn't know that's how a hydrogen bomb worked. I wonder if this process could work with other elements? In any case, another very interesting video.
Hydrogen can do much more interesting things that exploding balloons. One of the most memorable clips in the Cosmos series (Ch. 13, I think) covered basically the history of everything: the beginning of the universe, the formation of stars and planets, the evolution of life and even the history of mankind since it's dawn in Africa to the space program. At the end of the clip Sagan says: "These are some of the things that hydrogen atoms do, given 14 billion years of cosmic evolution". Respect H!
at 1:50 speaking about Chernobyl explosion as a result of reaction between Hydrogen and Oxygen, actually the explosion was reportedly ascribed to the sudden flash of water into steam due to the high temperature of the reactor fuel and debris
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
These videos are made by Brady Haran - check out his "Unmade Podcast" here: bit.ly/UnmadePlaylist
Does this reaction make singlet oxygen? Which would make it red i think.
i was just thinking if you mix hydrogen with co2 it might not be as reactive when it burns? 🔥🤔🤷♂️
😊
For those playing along at home for these 118 videos, your repeating cast of characters is: Professor Sir Martyn Poliakoff (mad, famous chemist - Oxford accent), Professor Pete License (chemist - Welsh accent), Associate Professor Deb Kays (junior chemist - cute accent), and... Neil (whose position and accent I am unable to identify, though via his age and experience he appears to be the Chief Lab Assistant or some such, though this may be a running joke). As of 2019 all three profs still work at Nottingham. There's also another younger male Professor with short hair who appears in these videos frequently, but I am unable to identify: he's got his own office so he's clearly a prof.
Don't forget about Sam.
I'll just add that if you've ever seen a Stephen Poliakoff TV series, Professor Sir Martyn is his brother.
These videos are TREASURE! I had always found chemistry boring and my brain just automatically shut down when I saw lots of chemical formulas. So I was searching for chem videos that can help me get asleep. Then I found these videos. Now an hour has passed and I am still awake enjoying these magic-like chemical reactions and knowledge. Thank you so much broadening my understanding of the world and leading me into the wonderful chemistry world!
The guy is the most stereotypical mad scientist I've ever seen
And we all love him so much for it
His hair is a tesla tower
Then you should check out the late Professor Julius Sumner Miller.
To me, he looks like a cross of Doc Brown (Back to the future) and Einstein...Love it!
I prefer Hououin Kyouma
Is anybody else on a periodic table marathon?
yes lol its like 4am here and this is the last playlist I haven't seen on this channel
+Miah Nuguid Exactly :-D
+Miah Nuguid Oh yeah!!!!!!! The periodic table is the best!!!!!!!
Me.
me too
The very first thing said at the beginning of the 118-long All The Elements playlist is... "We're braving the elements..."
And I like how the word “elements” can be read in two different contexts
That is made even more brilliant by it not appearing to be deliberate.
From today, I'm starting to watch one video every day from this series. 118 days for 118 elements. Let's go!
LOL when he detonated it, someone was walking by behind the treeline, and they stopped and looked around
Yeah i saw that too... It was funny
+Teagan Smith A chemistry creeper
lolololol
+Teagan Smith Yes, the hydrogen/oxygen combo created a hole in time. What you are seeing is the grassy knoll gunman in the distance.
poor kid :(
I'm so glad I found these videos! It's been more than 10 years! I'm so glad there's more amazing videos!
Did i just hear Neil talk?!
explorer914 😂😂😂
Yep 😆
Awesome science ;-)
I wish my Chemistry teachers were more like you guys!
a lot of chemistry teachers probably would be as fun as this if they were always teaching people keen to learn like you.
excellent to finally hear Neil speak ...would love to see more of him in the videos.
Neilred?🧐
😅 right till now we did know this type of explanation with practical also existed for about 15 years and we are realising it now. Chemistry is far more interesting when a knowledgeable man teaches our teacher just told us to memorize and never explain any things. But still find it on the right 👍 time 😊 thank you!
Love the ACME sticker on the detonator!
About the balloon burning, you can see the balloon parts move out of the way before it burns. Yes, hidrogen does give off a temperature regulated color from faint red to a bright yellow (see shuttle engines). Great stuff, thanks!!!
3:10 you scared that poor dude
Im on my way to gather more general knowledge and seeing the full periodic table on this channel is just awesome, thanks
A very concentrated mixture of hydrogen and oxygen may react (or detonate) with almost no color whatsoever (UV radiations are emitted). However, in the case of low pressure hydrogen burned in air, the reddish/pink color is normal due to the Balmer series emission lines of hydrogen atoms (temperature and therefore energy dependent).
I tend to agree with you, but I don't think it is the entire Balmer series as a hydrogen discharge lamp is purple. The lowest energy Balmer line is red. So there is just enough energy to excite to the n=3 level?
Well, in our lab, hydrogen burned in air is *completely* colorless. It's actually when we mix in oxygen that the torch turns a light blue color. So I'm not sure your explanation makes sense to me. Who knows
A spectrum of the emitted light would answer the question.
SO THAT'S WHAT NEIL SOUNDS LIKE!
YEAH was thinkin the same too and i finally found a video were he actually talked
@@axlsister5378 where he didn't?
I've watched more than a dozen video on this channel, this is the first time I've heard Neil speak :O
His "silent sidekick" role is so iconic in the rest of the series that it was a little surreal to hear his voice
I think I probably would have done better in school if I could have gone home and watch youtube videos.
antiswattt3
Not following your logic at all
I graduated school right around the time these sorts of videos started becoming common, so i just missed the opportunity. Now you can easily google this stuff or if you have problems in school you can google the questions and find explanations.
whats ironic is that now everyone is doing home learning
@@somanytvshowshavecausedmee899 ironic?? RUclips and other online resources are certainly making things much easier for us.
Visual learner, huh? Yeah, that's rough. I'm one of the lucky ones who learns best from reading, so I used to resent having to go to lectures because I could just go home and learn from the textbook. It's a shame schools aren't flexible enough to let everybody learn the way they learn best.
I'd love to have seen the reaction of the person walking in the background as they exploded the balloon!
I wonder how would The Prof look with his hair tied back.
He should be thinking about a new hair dresser.
I used to suck at chemistry and physics back in school. Now because of my career I am really into it. I wish I had paid more attention all those years ago, chemistry and physics are awesome. Biology is awesome too but i don't really care about it so much :p
wow that's sexist
Don’t care about biology... don’t care about biology... why though
Don't know much about biology,
Don't know much about the french I took,
But I do know that I love you and what a wonderful world it would be.
@@Bilbus7 ?
I love the Acme detonation switch box. Reminds me of the roadrunner cartoons! Great video!
5:50 the Prof. starts talking about nuclear fusion and it's possibilities for clean energy. It is now 2020 and the world's first nuclear fusion reactor is being built. What a time to be alive!
Should be here in 2031…😂
2:24 Just Love the ACME Detonator.... Baby..
What About the guy behind the tree's.
ACME Detonator is so win!
Lol
Great
Does anyone know a book that has information on all physical and chemical etc. properties of all elements on the periodic table?
Excellent video! Combine much of what I learned in College Chemistry into a single experiment!
The info about fusion reactions is a little bit off:
1) Simple proton-proton fusion is possible, releases energy, and is necessary for stars to work. It is just much more difficult because it requires one of the protons to randomly turn into a neutron while the protons are extremely close to each other (and also because the electric repulsion between the two nuclei is larger compared to their masses).
2) When two deuterium nuclei fuse, the normal result is not Helium 4, but rather either "Tritium", AKA Hydrogen 3 (one proton and two neutrons), or Helium 3 (two protons and one neutron). In the former case, one of the two protons is emitted (a normal hydrogen nucleus); in the latter case, a neutron is emitted. (This neutron will either fuse with another atomic nucleus or, if it continues to fly away for a few minutes, will eventually decay into a proton and an electron.)
3) Hydrogen bombs usually use deuterium-tritium fusion, not deuterium-deuterium fusion, although that does technically also happen when they explode, as does tritium-tritium fusion, and, to a much lesser extent other types of fusion. There are also thermonuclear bombs that use lithium isotopes.
People starting the playlist in 2019, check in here
Corpsie Corpsie we are here
Yup... Only 5 days of 2019 left
2020 here.
I'm in 2020
*2020
I'm doing a work piece on hydrogen for school now, this helped me to some things to look up about hydrogen and it's isotopes. Thanks!
This is what they should teach in the schools, and not all the useless stuff they currently teach.
That goes for the whole series, not just for this particular video.
it's amazing how I've lived for 19 years and only started to learn chemistry.
all those years i have failed to notice the most beautiful field of knowledge.
An ultra rare audio clip featuring Neil's voice.
Watching this as a learning tool for upcoming Chemistry Olympiad
I know nothing about chemistry and I want to study physics, but my teacher said “You’re going to the regional round.”
There is supposed to be a in-lesson experiment, so I hope I don’t blow myself up.
Anyways, nice videos!
Neil is my spirit animal.
lol
Dmitry Ivanovich built a table according to atomic weight, and he was right, because. atomic weight characterized the element completely, so to speak. This characteristic implicitly included both the periodicity and the charge of the nucleus. But someone collected the lanthanides after him in one line and placed them below the table. And Mendeleev had cerium after lanthanum. Now after lanthanum there is hafnium, and this is a gross mistake because, according to the atomic weight, it, hafnium, should be located on the line below. Elements 72-75 and 108-111 are omitted, starting with hafnium, the charges of the nuclei have changed.
After Mendeleev, the era of quantum mechanics began and its periodicity fit beautifully for many elements. Then it turned out that the main feature of the element is the charge of the nucleus. Before you is a table built according to the charges of the nuclei of atoms.
Ignite a balloon filled with hydrogen and you get a nice WOOMPH! Fill the balloon with a mixture of hydrogen and oxygen and you get a deafening BANG!
I saw a demonstration of this once. The prof used soap bubbles instead of balloons.
He also popped a piece of dry ice into his mouth to see if it tasted sour, as you would expect. Quoth he, "Never do that, by the way."
Strange fellow...
Your lectures seems interesting 🎉!
3:09 guy in the background thought he got shot
These videos have spectacular production quality for their age!
Neil speaks.
Per NASA hydrogen didn't fireball in the Challenger accident. They stated the plume was illuminated by the SRB's and the craft imploded due aerodynamic forces. At the time I was under the belief that hydrogen ignited with contact with Oxygen, so I was puzzled. That seems to be supported by the large cloud that lingered for some time afterwards.
Haha, ACME on the detonator. Nice touch!
best thing to binge watch on weekend instead of netflix!
About 0.00000000000001% of the volume of a hydrogen atom is taken up by the proton. Hydrogen gas at STP has a density of about 0.07. The density of the proton is about 100,000,000,000 which is little bit more than the density of the most dense naturally occurring element, osmium which is 22.5. A margarine tub of protons would weight about 50,000,000,000 tonnes, which I suppose is quite a lot.
I would love to see a video about metallic hydrogen.
Great video! I am excited to watch all the elements!
I remember filling a small balloon when I was 15. I did it downstairs. I lit it and the explosion was really loud. I felt the shock wave going through my body. Various objects were vibrating for 10 sec after it explosion.
Great video
Filling it with what?
Wtf are you talking about?
Deltaexio Hydrogen.
just subscribed and im excited to watch the rest of the Chemical Elements playlist
2:20 please tell me someone else saw that the detonator box was built by none other than "ACME" corp.. LOL im not expecting this to go well>...where the coyote when you need him? LOLOLOL
jetpaq every ACME corp item coyote got didnt work for him because roadrunner owned ACME CORP
That is one of the interesting RUclips channel, I found.
Some say the balloons are still up there.
Hydrogen: extremely reactive gas
Oxygen: extremely reactive gas
hydrogen and oxygen together: lol water
I can't belive it's been 10 years already.
14 now. Crazy how time flies.
I learn so much from every one of your videos. I wish you were my teacher in school :)
2:23 Acme brand detonator. Wile E. Coyote would be proud.
Yup
@Nevir The mug is at the front of the desk and the ball is set toward the back. He drinks from that cup in one of the alcohol related episodes, and it's your average size coffee mug.
you guys should work together with The SloMoGuys. the footage of u guys collaboration must be amazing!
I applaud you for being able to answer his question seriously.
What I wonder is;
That both Hydrogen and Oxygen, when isolated, are fuel sources for fire - so how is it that when combined to make H2O (water) they are able to extinguish a flame ?
because the energy released in a typical combustion reaction isn't strong enough to break the bonds in an h2o molecule. And how water is extinguishing a flame is by reducing heat and saturating the combustion fuel source. for instance, once wood is wet, the air pockets in the wood are filled with water which as we no is not combustible with simply heat and ignition.
1) The properties of a compound are usually unrelated to its components. Sodium Chloride is not a metal, nor poisonous, nor highly reactive.
2) Neither element, when *isolated* is a fuel source. Hydrogen will combust in the presence of oxygen, creating water.
You guys should invest in a super high frames per second camera when you film your experiemnts!!
Thank you so much for all of your videos!!
3:05 That bloke pissed himself
My only singular complaint about these absolutely sensational videos is that they are not numbered.
anyone in 2024?
Here
Here
:)
yep
Hello
Stop the repeats you guys.
I love this channel
ACME detonator HAHAHAHHAHAHAHA
***** Road runner! *high fives*
Why not a big weatherballon with hydrogen?😃
Micha Grill because thats to obvious because thats the main focus of the video i saw something hidden or less obvious thats why i comented
***** Simply Amazing. LOL!
Glad someone else also noticed that :-)
One of the best chemistry videos on youtube!
-Suriyaa Kudo
NEIL SPEAKS!!!
I like the guy walking in the background at about 3:05. He pauses for a second after the explosion and then keeps on walking.
@3:09
You can see the guy in the background walking stop when the balloon pops.
Most Awesome Playlist Idea. Im Saving It. Brilliant.
i guess Other Streams Would Learn From This Playlist; Biology, ParticlePhysics etc channels.
Thanks
lol person in the background.
ITS BIGFOOT! I FOUND BIGFOOT, GUYS!
LOL
Elder Galaxy 42 Messin With Sasquatch
olumide
I love this
Luigi Lim Tolosa yes?
I totally love 💕 Periodic Videos ! And I'm really listening to the Professor with a great respect! And to the Side wing 🍗 always ! Which is buff in explanation of the practice ❤😅 Lovely 🌹
Hydrogen gas is the least dense substance in the world, at 0.08988g/cc. Hydrogen solid is the most dense substance in the world, at 70.6g/cc.
+Riona Sera ,So all I am is solid Hydrogen , Thanks! :)
+Riona Sera I don't know where you got that information but it's wrong. Solid hydrogen is the lightest solid. And the units should be g/L, not g/cc.
+JayMark2049 I don't think you understood the joke....
BABAR Khan No, and I still don't. lol
I don't get it either
This is probably one of my fave videos cause of fun factor of the the balloon experiments, and also Neil speaks!
Did ssomeone saw the person in the background when the balloon explode, just walking and suddently stop when it explode? :D
I did lol.
yea I saw him
Just startet my first college course for chemistry. Here. We. Go.
Anybody in 2024 ? ✋🏻
i have the same mug as him every time i have a cup of tea i try and recite the periodic table!
Watching this in 2024 seems amazing 😂
😅 right till now we did know this type of explanation with practical also existed for about 15 years and we are realising it now. Chemistry is far more interesting when a knowledgeable man teaches our teacher just told us to memorize and never explain any things. But still find it on the right 👍 time 😊 thank you!
I love that the professor's models are always dog toys. Without fail, when I'm confused about the object he's showing to the camera, I ask myself, "could that be a dog toy"? The answer is always, "yes that's definitely a dog toy".
And lol. "ACME detonator"?
Yup
if I had a dollar for every pixel in this video, I'd have a nickel
One down 117 to go
one down... only 117 to go! It's elementary, my dear Rchangel!
Chornobyl was not a hydrogen-and-oxygen explosion, it was a steam-explosion, like when an over-pressurized water-heater explodes. Challenger wasn't a hydrogen-and-oxygen explosion until AFTER the initial explosion, which was a failure of the solid-rocket-booster seal. The last major example of a hydrogen+oxygen explosion was during Fukushima Daiichi. Before then, the most recent example of a hydrogen+oxygen explosion that I can think of would be the Hindenberg.
who's watching in 2017?
Thank you so much for making these videos!
he said "more denser"
....smh
He's a scientist, not an englishmatician!
My favorite demo from high school physics was when the teacher put a coffee-can full of hydrogen at the back of the classroom, with a pinhole in the top and a larger hole at the bottom. He lit the hydrogen coming out the top, and it simply burned like a candle. He then started the lecture for the day. About 5 minutes later, there was a tremendous BANG! from behind us. When the air coming in at the bottom increased the oxygen/hydrogen ratio in the can to 1:2, the reaction sped up a bit.
Thanks for the video, it’s informative and fun to watch!
That's amazing, I didn't know that's how a hydrogen bomb worked. I wonder if this process could work with other elements? In any case, another very interesting video.
I think it also works with helium, i think.
Hydrogen can do much more interesting things that exploding balloons. One of the most memorable clips in the Cosmos series (Ch. 13, I think) covered basically the history of everything: the beginning of the universe, the formation of stars and planets, the evolution of life and even the history of mankind since it's dawn in Africa to the space program. At the end of the clip Sagan says: "These are some of the things that hydrogen atoms do, given 14 billion years of cosmic evolution". Respect H!
at 1:50 speaking about Chernobyl explosion as a result of reaction between Hydrogen and Oxygen, actually the explosion was reportedly ascribed to the sudden flash of water into steam due to the high temperature of the reactor fuel and debris
They say that the only thing more common than hydrogen is stupidity. Watch all these videos, and maybe we can tip the balance just a little.
Excellent video, thank you.
Bill
01/07/2021.
I am here for a periodic table videos marathon.
0:49 neils voice wow.
Don't you just love Brady's channels?
I've seen it. It's intense. And you're exactly right - it's a sharp "bang" rather than a "boom".