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In Reply to: RE: The world of acoustics posted by geoffkait on March 24, 2015 at 04:20:44
"There is no fine line between quantum physics and classical physics. How small can something really be and still affect the sound seems like an excellent title for a new thread. Lol"
Yea! Well put!
I read a neat opinion a while back, unfortunately I don't recall where, that if the equation needs Boltzmann's constant then you are at the "quantum level".
Perhaps that the closest thing to an answer there can be. My world is one of "simplifying assumptions". What makes traditional engineering work is knowing what you can "safely" ignore. Naturally as our technology and understanding have improved it's practical to ignore less than it was fifty years ago, but the threshold just shifts, it's still there.
Continuity is a judgement, not the way of the universe. But we try to work around it...
Rick
Follow Ups:
Well, while Boltzman's constant is kind of the right idea it's actually the de Broglie wavelength that determines the transition point from classical physics and quantum physics for things like CD lasers and the Intelligent Chip and many other things. Thus, when a particle, e.g. Electron is confined I,e., trapped, in an enclosed space with dimensions less than about 50 atomic diameters (10 nanometers) it can no longer move as a particle but MUST move as a wave. And photons emitted in this case must be coherent, I.e. Waves. Thus the CD laser is an example of photons acting only as waves. So is the Intelligent Chip, I.e. Quantum dots.
Edits: 03/24/15
"Boltzman's constant is kind of the right idea"
Perhaps it was Planck's constant, that would make more sense. I'm reading a book on thermodynamics and have Boltzmann on the brain. And it's not a pretty picture...
Could you recommend further reading re. the trapped electron business?
TNX, Rick
They don't call it "nanotechnology" for nothing. Forget Planck's constant and Boltzman's constant. The scale you're looking for is on the order of 10-9 meters. Make sense? That's what the de Broglie wavelength is all about. Google quantum confinement. That's where the effects take place. But as schroedinger wisely pointed out quantum mechanics reaches to the macro. That's kind of the whole point.Big things have small beginnings. - Prometheus
Edits: 03/25/15 03/25/15
"But as schroedinger wisely pointed out quantum mechanics reaches to the macro. That's kind of the whole point.
And that's just what I wish to understand!
Thanks for the pointer.
Rick
Look out! Rick is on the move!
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