Photons?
In article ,
FBMBoomer wrote:
Now what ham radio needs is a completely new type of communication. I am
thinking of those twin particles that react to one another regardless of
distance and without the delay of distance.
You're thinking of entangled particles?
One of the weird things about entanglement (and what Einstein called
"spooky action at a distance") is the following paradox:
- Measurements have shown that interacting with one of a pair of
entangled particles, has a definite effect on the state of the
other member of the pair. This effect occurs regardless of
distance, and isn't affected by lightspeed delay.
- You can't use this effect to send information faster than the speed
of light. At least, nobody has been able to, and (as I understand
it) there are good theoretical reasons to believe that it's just
not possible.
The reasons are (as I said, weird) that when you interact with
particle A, the effect on particle B is one which you can't actually
detect independently (that is, by measuring particle B alone). You
have to compare the measurement on Particle B, with information that
you can only get from the measurement that was taken Particle A, to
confirm that the effect actually occurred...
.... and in order to do this, you have to transmit that information
from the Particle A measurement site, to the particle B measurement
site, via some other means of communication... which occurs at the
speed of light (or slower).
I think this was demonstrated very well on Star Trek. They can talk
across light years instantly. To bad Gene is dead. He could have helped
us all out with just how to do this. It was in all the scripts, it must
be true. It is my mythology so don't be making fun of it.
:-)
'Tis a fine mythology, and a great technology to hope for (and try to
discover).
Unfortunately, all of the tests which have been done on entangled
systems keep showing that entanglement is real, but (like
"superluminal" phase velocity) can't be used to send information
faster than C.
It's very frustrating.
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