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limitkiller
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why are molecular vibrations never synchronized in a way that would make them macroscopically observable?
why are molecular vibrations never synchronized in a way that would make them macroscopically observable?
The earliest practical examples of Stimulated Emission was with Microwaves. The MASER came before the LASER and in both cases, waves are produced in synchronism. You do need 'special' conditions for this to happen and it would never happen by chance because of the way the energy levels are naturally populated. It would be interesting to know the lowest frequency of stimulated emission that has been achieved. Probably something to do with thermal activity upsetting the population?why are molecular vibrations never synchronized in a way that would make them macroscopically observable?
That's not true. E. g., sound waves in solids are synchronised vibrations of the molecules. The term to look for is "collective excitations".why are molecular vibrations never synchronized in a way that would make them macroscopically observable?
why are molecular vibrations never synchronized in a way that would make them macroscopically observable?
If we had two magnets swinging on pendulums, I would expect them to synchronize after a while(Right?).Why would you expect them to synchronize?
you are right. I was thinking about the vibrations that are due too temperature.What makes you think that they are not "synchronized"?
There are "normal modes" of vibrations in solids. And DrDu has pointed out another example.
Your starting premise is faulty. Rather than asking us to explain your faulty starting premise, it is wise to FIRST establish if that premise is true or false.
How so?and it would never happen by chance because of the way the energy levels are naturally populated.
It's a while since I learned about stimulated emission but is it not true to say that a population inversion (necessary for lasing) is not a common natural occurrence?How so?
Based on friction macroscopic objects have. There is no friction on the level of individual atoms because you can't heat their constituents.If we had two magnets swinging on pendulums, I would expect them to synchronize after a while(Right?).
Assuming that there was no friction, wouldn't two magnets swinging freely parallel to each other eventually synchronize?Based on friction macroscopic objects have. There is no friction on the level of individual atoms because you can't heat their constituents.