Boiling, Atmospheric Pressure, and Vapor Pressure
ฝัง
- เผยแพร่เมื่อ 1 ก.ค. 2016
- A video about the phenomenon of boiling for the Khan Academy talent search contest, July 2016.
Images:
Image of Earth from Space (1:12):
commons.wikimedia.org/wiki/At...
Layers of Atmosphere (1:21):
www.grc.nasa.gov/www/k-12/air...
Mount Everest (2:05):
commons.wikimedia.org/wiki/Fi...
This video is composed of three main sections:
- An Introduction to Boiling
- Atmospheric Pressure and Boiling
- Vapor Pressure and Boiling
By understanding the physical phenomenon of boiling other concepts, such as the effect of temperature on molecules, atmospheric pressure, vapor pressure, intermolecular forces, and temperature become more understandable.
No jargon, no BS intro; cuts straight to the point with clear animation/demonstration and simple explanation.
We need more such videos!
Many thanks to the creator!
You are most welcome!
The world needs more simple videos like this one !
Thanks! --- Dr. B
The only video on youtube that explains this concept perfectly!!!!
Thanks! --- Dr. B
Yeahh!!!
Not quite perfect in my mind. See top level reply under separate cover.
seriously! many many many thanks. You don't know how happy I am feeling after watching this video. It helped me solve my long pending answer. Had you been here...i would have kissed your hand sir. Thanks once again.
By far the best explanation I've come across
Simply brilliant...this is the clarity every kids taking science should have
but WHY do the molecules act the way they do when heated? This video fails to explain that.
@@ruthgoldblum919 dude finish your 10th standard first,then u can research about pressure.
Wow. Such a perfectly explained video without being overly complicated. I loved the use of analogies and real life demonstrations. That was perfect.
that's what every student needs.easy and simple explanation .
Absolutely the best explanation of this here in youtube .Thank you so much Dr.Breslyn!
this man's a legend! tomorrow's my exam and your video singlehandedly cleared my understanding of this topic and i have been struggling for weeks! Thank you so so much!
This is a GREAT video and showed exactly what I wanted to understand! Thank you so much for taking the time to create and share this! Just a minor suggestion, and this only because I'm coming from the point of view of someone who does voice overs. There is a good deal of mouth noise in the video which can be mitigated by setting your microphone to cardioid mode, dropping the gain a little from what it was, making sure your teeth are brushed and having a cup of a hot, clear liquid such as apple cider or hot tea. Just throwing my 2 cents in from my experience. Again, the video was awesome and I have not yet found a better one! MUCH appreciated!
Thanks for the suggestions - recording quality is an area I would like to improve. I recently got a Yeti Blue mic and just checked to be sure it is on cardiod mode (it is). I believe I was using an older mic when I did the video. If you have a chance, see if this video is any better: th-cam.com/video/6b6GadB28o4/w-d-xo.html .
---Dr. B
I think my favourite part about learning concepts is that click moment where you didn't quite understand something and then suddenly it all falls into place.
I agree 100%. It's sort of magical sometimes.
Amazing presentation! no crappy intro, music or anything, and the part of showing which topics are next. Thank you!
This video is fantastic! Thanks so much for it! I finally understand these concepts! You’re a lifesaver!
For a period of 6 minutes, I fell in love with physics. Nicely done explanation. Thanks,
That is great to hear!
Perfectly explained.I was having a doubt in this topics for a long time but you cleared it.Your explanation is brilliant
Amazing video, loved it! Helped me understand vapour pressure in less than 10 mins.
The most perfect video on youtube to understand boiling phenomenon and vapor pressure!
I am truly grateful to you. I never thought it would ever be so clear to me. Thank you very much.
I don't even have to rewatch many times to understand. This is the best Explanation ever. Thank You!
You are most welcome!
This is the most creative way to describe these things! thank you so much for this!
Thanks for the kind words!
1:56 my chem teachers piling chemistry on top of me
Yah, that's chemistry for you...
Kudos to the creator for making this concept clear to me...
This is a really nice description of boiling and an important concept in human physiology and a great segway to understanding absolute and relative humidity... Have you ever thought of doing a video on those concepts?
Finally , I got what actually boiling is.... Thanks a lot ... I had a misconception .
This video is really helpful sir.
Our teachers don't tell the concepts behind the facts but you have explained all things.
I saw a lot of videos on TH-cam for vapour pressure and boiling but nobody explained so nicely like you.
This 6 minute video really failed 1-2 hours lectures..... 😎😎
Thank u sir for making such helpful videos.
This is one of my best videos!
This was a well done video. Thank you for taking the time to make it!
Glad it was helpful!
Wonderfully explained. Only Video on this topic with so much clarity. Seriously thankyou very much.
Thanks for the kind words! --- Dr. B
Thank you soooo much for giving us a clear explanation. It's really helpful to understand about boiling point and pressure more clearly.
My pleasure 😊
Generally I don't comments on any kind of videos but after watching this video I can stop myself to do this ... perfect concept
Thanks, this is one of the best videos I've done to date!
This channel is a miracle undoubtedly 💙
Thank you!
What an excellent video!
Wow. Such a great simple explanation, but in depth too. Helps for AP chemistry. Forgot my honors chemistry
Thanks and all the best in AP chem! --- Dr. B
Came here to try to understand the concept of Vapour pressure, nd I understood a lot more things than I was expecting, thanks so much.
Great to hear!
before this i just know the definition of boiling but you changed the whole viewpoint superb sir
At 1:20 you say "only 50 kilometers has enough air for humans to breath." But 50 kilometers is approximately 31 miles; and 26,000 feet (8,000 meters or 4.9 miles) is the official ‘Death Zone’ where severe altitude sickness occurs without the use of supplemental oxygen. Other than this bit of confusion, the video is really good. The best explanation of boiling I've ever seen.
Hmmm. You make a good point!
Thankyou. Lots of love and respect🙏😊
Finally,find it. Absolutely great work. Thank you sir
Glad I could help!
Finally something that was confusing me a lot is clear
Thxx✨
thankx for an amazing explanation. ..amazing help for class lecture~
No words.its most valuable teaching.
Thank you!
I appreciate the video. Have a test tomorrow where I need to be able to explain this, but and this does a great job, I think my understanding on this topic got a lot better, I liked the visuals too.
Excellent and all the best on your test!
Hello Sir , I wanted to ask when we have the vapour pressure above a liquid and also an external pressure acting on it(eg atm pressure) , What is the total pressure acting on the liquid at that time?
thanks a lot,everything explained that i had a doubt about.u earned a like.
Clear and conceptual explanation thank you sir 🙏🙏🙏🙏🔥🔥
Hello Wayne Breslyn, before I tell you why I commented I want to tell you what I think the meaning of life is, the meaning of life is to know as much about the world around you so that you have the advantage over others to manipulate it (knowledge is power)
At 2:05 when you explain why water powers at a lower temperature at higher altitudes I feel like I unlocked a piece of knowledge about the world. For me the whole reason I even care is because if I ever go camping high in the mountains with friends and I boil water I have the knowledge to explain why the water boils faster. I have the power to educate others because of you. Thank you.
Some people take for granted that they live in the Information Age, in a time where you have access to learn about (almost) anything about our world and the universe.
Thnku so much for this video ...it made my concept clear..
best explanation ive come across on boiling point
This is one of my best videos!
I have a doubt hope you would help. When the vapour pressure and atmospheric pressure are equal boiling takes place, what is the total pressure acting on the liquid water at this condition?
This is a great explanation!
Thanks, this is one of my best videos! --- Dr. B
Thanks for the vid really elucidated everything
No problem, elucidating is my thing. --- Dr. B
if water vapours are pushing against atmospheric air means they also push water down there, since pressure acts normally in all directions. How would this be correct explanation?
Excelent video. Thanks
Finally a good one to understand this confusing concept🙌🙌
Thanks!
thank you very very much. this video helped me so much and answered my long-time questions. I'm a mechanical engineer.
How does water vapour form? Please make video on this topic.
I m so curious to know what is boiling point, and I get the feel of boiling point. I appreciate your efforts
Thank you so much! So easy to digest and understand. Really appreciate it
You're very welcome!
You are really amazing teacher sir. I am in class 12th (india) but didn't know the real Concept but the way in which u explain is outstanding. Hat's off to u sir
Glad I could help!
Thank you. This has cleared up my confusion😊
Ohh myyy goshhh!!!
This video is a life saviour 😲😲😲😲😲
Wonderful!
Thanks a lot . this cleared some stuff up
Very well explained
I have a Liquid Oxygen container at -196C, as per heat transfer I calculated a vaporization daily rate of 0.1036% at ATM pressure. if I increase the container pressure to 0.1519 kg/cm2 how much will the vaporization rate decrease?? How can I calculate this? I'm kind of lost, I was trying to use this ecuation but then I think probably is not the right one for my problem.
I feel there should be more said about what exactly it is and what causes it to go up and down.
Love how he explains it simplefor kids to understand
Thank you very much!!! great explanation
Thanks! --- Dr. B
Best n simple for understanding 😊
Beautifully explained
Thanks! --- Dr. B
Thanks for such a nice explanation
Glad it was helpful!
Excellent!
Thank you! --- Dr. B
Thanks for the video it helped me out a lot!
Excellent!
Sir does low atmospheric pressure decreases van Der wall force?
Thanks about this information about boiling.
It was so useful 😃😊👍🏻😄
he is best in this business!!
Amaaazing explanation, thanks a lot!!!
You are welcome!
I was curious about that, it pretty cool.
Very simple, very clear and very good explain for understanding. Thanks 👍👏👏👏👌
Glad it was helpful!
Great video
Thanks! I thought you might find it useful.
Thank you so much sir, concepts fully cleared!
Excellent!
does vapour pressure act only against the air molecules and not on the surface of liquid?
best possible video
thx
You're welcome!
Genius explanation
Glad it was helpful!
Thank you 💜
THIS IS GREAT
😎
Thank you
amazing
Wow brilliant 👏👏sir
I under Crystal clear this topic
Great video ❤😊
❤🎉
You earned my subscription thank you
Thanks alot
Such a nice explanation
You are most welcome!
Awesome vid man..
U got yourself a subscriber!😍
Welcome aboard!
Nice, clear, pure water!
You got it! --- Dr. B
but why temperature becomes constant during boiling and doesn't increase further even on adding heat?? if its just the game of bubbles it doesn't the explain why the temperature can't rise further ,,,if I say that below 100 degrees the energetic water molecules forms bubbles but those bubbles don't have that much vapor pressure so it collapses but at 100 degrees they have enough vapor pressure to escape but even above 100 degrees the bubble have more pressure right? and more bubbles will form because there will be more no. of enough energetic molecules ....so why it doesn't rise above 100 degrees ?
Hi! Great video! I have a question about when the water 'boils' in the syringe, you said that was boiling with no increase in heat...is the boiling just the creation of the air bubbles and not heat? Or would heat have occurred eventually in the syringe?
The pulling on the syringe creates a vacuum. That makes it easier for water molecules to spread out and change into a gas. Some of that happens in the water - those are the bubbles. Heat won't be created by this process - the water actually gets colder. You can even use a vacuum to make ice (here's a goofy video someone did showing that happening: th-cam.com/video/2ugpooGzfR8/w-d-xo.html).
How does the boiling water choose which molecules to turn into vapor first. I do not believe it is random.
You have explained this sooooooooo well!!!!!!!!😮😮😮
Thanks for the kind words!
Best explanation sir :) Thank You
You are most welcome!
very good