/sci/ - Science & Math

>>14689399
How does quantum physics relate to causality? What if I, for example, set up an optical resonator that had a potential barrier in the middle and gain media on either side, such that a small number of photons would tunnel through the barrier during each pass and the signal would be amplified by the gain media for the next pass. Do the photons tunnel instantly? This is what I was taught in my undergrad classes and if that's the case I don't understand why you couldn't use something like this to technically send a signal faster than light.

What is dark matter? Is it dark? Can you touch it? Is it just a fancy word? All I can tell from these retarded popsci noobs is that they use it to throw you off because they infact in reality basically do not know anything about physics at all.

>>11788143
What did he mean by this?