The core of a single-mode fiber is between 1-10um, add a cladding to that and you have a very macroscopic entity. I'm not sure if a material made of carbon-nanotubes can be precisely grown over a large dimension to accommodate this? Fibers are sensitive to bending and having them swing around in...
Why not? There is a huge body of work demonstrating this. I believe you are referring to the "no-cloning" law, which says that a quantum state cannot be cloned. It can be mapped/copied but not cloned.
The fine structure constant is not merely a combination of various fundamental constants in a certain way. It has fundamental significance and has been experimentally measured many many times.
http://physics.nist.gov/cuu/Constants/alpha.html...
I don't know anything about string theory, but AFAIK there is not a single shred of definitive experimental evidence that confirms it.
Regarding the original topic, we accept that the speed of light is a constant (experimentally proven) in vacuum and build our theories around it.
PS# One...
Nobody knows.
Nobody knows why the fine structure constant turns out to be approximately 1/137. It just is. No known theory seems to explain it without running into circular arguments.
A coherent source has nothing to do with how well collimated it is. Also, the source being single frequency etc etc does not guarantee coherence. The correct way to determine if a source is coherent or not is by photon counting statistics. If the statistics/counting reflect a Poissonian...
You will be in trouble if it was a used unit. However, you may be able to get away with using it if you fan mod it (for 2 x better air-flow).
http://www.newegg.com/Product/...x?Item=N82E16817139003 {You can find it cheaper elsewhere}
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