3rd April 2007 - 12:24 AM
QUOTE (kaneda+Apr 2 2007, 05:09 PM)
The two slit experiment goes to show how gullible people are. Photons are waves. How big is a wave? Any size.
HOW BIG CAN A WAVE BE?
HOW DOES IT COME INTO EXISTENCE?
ALL AT ONCE OR OVER TIME?
DOES IT START SMALL AND REACH ITS SIZE?
THESE ARE QUESTIONS ABOUT LIGHT.
IS IT LOCAL?
IF SO HOW CAN IT FORM ALL AT ONCE?
IT CANNOT. IT MUST GROW AND SHRINK.
MITCH RAEMSCH -- LIGHT GREW --
3rd April 2007 - 02:05 PM
Hi Nick, anchda, kaneda and zephir et al,
Richard Feynman’s description of Young's Double Slit Interference Experiment as “a phenomenon which . . contains the only mystery.” The reason why so much attention is focussed on this one experiment is this is where it all hangs together. There is no mystery truly like this one and anyone who says this is just a simple concept just does not "get" quantum mechanics or what is truly happening here.
Photons as waves spread. This is the "unobserved" nature of the photon's quantum. To attempt to observe it "collapses" the state. The picture that zephir shows there is a high energy "observed" photon. This does not exhibit quantum phenomena but behaves simply as a projectile as shown. In that state it cannot partake in the simple diffraction experiment shown in detail elsewhere. The other point is the incredibly short wavelength of Gamma-Ray Photons. Photons have two separate natures... the wave and the particle... and they cannot be observed "together".
A wave can pass through two or more slits at the same time but when it is "detected" it will only be found in a single position... just like in that spark chamber photograph, a series of tiny sparks that show where the particle aspect of the photon is going. To attempt to catch the photon out at passing through one or other slit or pinhole destroys the quantum interference effect. It is equivalent to forcing the photon through one slit and not the other. This will simply produce the effect of the photon only passing through one slit, so there can be no self interference.
That is the interest and that is why it is important.
3rd April 2007 - 02:15 PM
HOW BIG CAN A WAVE BE?
Look at rpenners post here :-http://forum.physorg.com/index.php?showtop...ndpost&p=171217
It gets REALLY INTERESTING
I seem to reached the end of rpenners (great) patience .. he might respond better to someone else.
The answers (some) are out there
21st April 2007 - 03:47 AM
WHAT IF MEASUREMENT DOES NOT CHANGE ANYTHING BUT IT IS SIMPLY ANOTHER AS YET UNKNOWN PHENOMENON OCCURING?
MITCH RAEMSCH -- LIGHT FELL --
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