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→‎Wave particle Duality: Waves are subject to gravity
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:: As for the stars, reasonable people at that time thought that there were just some 2,000 stars. The 6,000 stars was an extrapolation, including unseen stars in the Southern Hemisphere. I came across this 2,000-stars number some time ago, probably in [[Hyginus]]'s Astronomica. In Hyginus, the Milky Way is ''not'' formed by stars - see the last chapter. [[User:Sunda62|Sunda62]] 14:08, 29 September 2010 (EDT)
 
:: As for the stars, reasonable people at that time thought that there were just some 2,000 stars. The 6,000 stars was an extrapolation, including unseen stars in the Southern Hemisphere. I came across this 2,000-stars number some time ago, probably in [[Hyginus]]'s Astronomica. In Hyginus, the Milky Way is ''not'' formed by stars - see the last chapter. [[User:Sunda62|Sunda62]] 14:08, 29 September 2010 (EDT)
 
:::Wait, waves aren't subject to gravity? As in, the wavefunctions of quantum mechanics? Correct me if I'm wrong, but isn't (say) the Dirac spinor wavefunction of an electron subject to electromagnetic interactions in QED? Once we are able to quantize GR, won't we have something similar? (i.e. effects of gravity on the motion of some massive particle.) [[User:AndyFrankinson|AndyFrankinson]] 09:23, 11 March 2012 (EDT)
 
:::Wait, waves aren't subject to gravity? As in, the wavefunctions of quantum mechanics? Correct me if I'm wrong, but isn't (say) the Dirac spinor wavefunction of an electron subject to electromagnetic interactions in QED? Once we are able to quantize GR, won't we have something similar? (i.e. effects of gravity on the motion of some massive particle.) [[User:AndyFrankinson|AndyFrankinson]] 09:23, 11 March 2012 (EDT)
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:::: Yes, waves are subject to gravity. A good example is gravitational lensing, in which gravity deflects the path of electromagnetic ''waves''. Both Newtonian gravity and general relativity predict this, although only general relativity's predictions are consistent with the data. [http://scholar.google.com/scholar?q=gravity-induced+quantum+interference&hl=en&as_sdt=0&as_vis=1&oi=scholart&sa=X&ei=DohdT7f1IoGogwelhfGhCw&ved=0CBwQgQMwAA In quantum mechanics gravity can also cause interference]. So, yes, gravity does indeed act on waves. --[[User:BradleyS|BradleyS]] 01:35, 12 March 2012 (EDT)
    
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