Richard Phillips Feynman (May 11, 1918 – February 15, 1988) was an American… Read Full Bio ↴Richard Phillips Feynman (May 11, 1918 – February 15, 1988) was an American theoretical physicist known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, and the physics of the superfluidity of supercooled liquid helium, as well as in particle physics (he proposed the parton model). For his contributions to the development of quantum electrodynamics, Feynman, jointly with Julian Schwinger and Sin-Itiro Tomonaga, received the Nobel Prize in Physics in 1965. He developed a widely used pictorial representation scheme for the mathematical expressions governing the behavior of subatomic particles, which later became known as Feynman diagrams. During his lifetime, Feynman became one of the best-known scientists in the world. In a 1999 poll of 130 leading physicists worldwide by the British journal Physics World he was ranked as one of the ten greatest physicists of all time.
He assisted in the development of the atomic bomb during World War II and became known to a wide public in the 1980s as a member of the Rogers Commission, the panel that investigated the Space Shuttle Challenger disaster. In addition to his work in theoretical physics, Feynman has been credited with pioneering the field of quantum computing, and introducing the concept of nanotechnology. He held the Richard Chace Tolman professorship in theoretical physics at the California Institute of Technology.
Feynman was a keen popularizer of physics through both books and lectures, notably a 1959 talk on top-down nanotechnology called There's Plenty of Room at the Bottom, and the three-volume publication of his undergraduate lectures, The Feynman Lectures on Physics. Feynman also became known through his semi-autobiographical books Surely You're Joking, Mr. Feynman! and What Do You Care What Other People Think? and books written about him, such as Tuva or Bust!.
He assisted in the development of the atomic bomb during World War II and became known to a wide public in the 1980s as a member of the Rogers Commission, the panel that investigated the Space Shuttle Challenger disaster. In addition to his work in theoretical physics, Feynman has been credited with pioneering the field of quantum computing, and introducing the concept of nanotechnology. He held the Richard Chace Tolman professorship in theoretical physics at the California Institute of Technology.
Feynman was a keen popularizer of physics through both books and lectures, notably a 1959 talk on top-down nanotechnology called There's Plenty of Room at the Bottom, and the three-volume publication of his undergraduate lectures, The Feynman Lectures on Physics. Feynman also became known through his semi-autobiographical books Surely You're Joking, Mr. Feynman! and What Do You Care What Other People Think? and books written about him, such as Tuva or Bust!.
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Atoms In Motion
Richard Feynman Lyrics
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crashsitetube
+Thomas S. I also like Feynman. Doesn't mean he's always right.
Math genius physicists live in a state of denial. Things that are really obvious escape them. When those observations don't align with what they were taught, they just deny observation.
Case in point is Brownian Motion. Einstein postulated that the random movements of pollen or smoke particles, etc., are due to collisions with air molecules. Einstein can almost be forgiven for his conclusion. We can't.
If there were a few million air particles in a cubic foot of air, then occasional collisions with a pollen grain would occur. Of course there are a LOT more air m,molecules so a massive particle, like a pollen grain, will
actually be struck a huge number of times from all directions in the
amount of time it's nudged this way and that. Besides, a single air
molecule doesn't have enough momentum to nudge such a massive
particle far enough to observe it with a 200 year ago microscope (or
a modern one). These are the very calculations you would expect a
math genius to do. They would rather just pretend that all is well in
their land of denial.
Ask your physics teacher to do the math for the actual number of air molecules and the size and mass of small particles (that can be seen under a microscope) and see if the numbers add up for the amount and frequency of movement observed for Brownian Motion.
What's really needed is an occasional push, from one direction, with enough momentum to nudge the particle as fast and far as it is seen to move.
The concept of adiabatic heating and cooling is not understood. How merely compressing something can make the molecules move faster than the speed you are adding to them by pushing. As a result, the physics of the
adiabatic process is taught more as engineering than physics. Ask
your physics teacher to explain how (to answer your question) there
is more heating at the top of the compression stroke than the middle.
I believe that the answer to the adiabatic question also answers the Brtownian Motion question. I also believe that your physics teacher will assure you I'm wrong but wont have a good answer as to why.
BTW: I find this stuff a ot more fun than trying to socialize physics.
T S
Is it maximum "heating" or is it that the maximum amount of heat has been added by the time the piston has reached the top of the stroke?
Perhaps the rate of the increase in heat being added (heating) is what he is talking about, and if so, he is correct.
I just took physics 2 last semester, and being an electrical engineering major, thermodynamics was not my favorite subject of that class. So I may be totally wrong.
But that's not the point, the original point if you will was that I particularly like Richard Feynman and am not "mindlessly engaging in hero worship." Is it that much of a sin to like someone who has a big name?
Besides, it's the internet, where people like me like to mess around. What's it really matter?
crashsitetube
+Thomas S. No, I'm far from "perfect" but, I am wearing my 'big boy pants'. Actually, Mr. Feynman makes an error in this very video...and it's not just an innocent stumbler of a misspoken word or two.
He describes the bicycle pump as heating the air by adding its momentum to the air molecules (essentially adiabatic heating...yeah, I know, more of those pretensions big words).
Consider a Diesel engine. On each compression stroke the air in the cylinder is heated sufficiently to ignite the fuel charge. Max heating occurs at the top of the stroke when the piston is moving slowly. Per Mr. Feynman's explanation it should occur mid stroke, when the piston is moving fastest.
If you are unable to see or accept that the above is true you, too are probably a 'rote learner' and will likely never be able to 'get it'.
We need a better explanation of how the bicycle pump heats the air. Keep an eye out for, "salaphysics" which will provide some of those 'better' answers.
Jeeze, I just take ALL the fun out of physics by trying to insist that it be accurately explained, huh?
Doodelay
He tells science like a story and I love that! Haha
It's like I'm listening to an adventure or something
DeuceGenius
hes inspiring and you can tell hes genuine in his fascination with the world we live in
Porkfriedrice
He's a scientific poet.
Adam
'You can learn a lot by having a bicycle' - I love that.
Fusion Developer
I love learning things, especially science.
Milan Karakas
I don't know why I love to watch those videos with Richard P. Feynman again and again. It is so addictive. Btw, he mentioned cup of coffee... I need one right now. :D
Jennifer Jurgens
I love this man.
DeuceGenius
been my hero since i first discovered him
J S
his last few sentences in this video are a gem. hear that teachers!
A Disibio
What is the full video called?