What phinds is saying is that we live in a 4 dimensional world where 3 dimensions are spatial, and the fourth is time. It is incorrect to say that we live in 4 spatial dimensions.
One of my personal favorites is General Relativity by Hobson,Efstathiou, and Lasenby. It has a chapter in the beginning that gives a good review of special relativity. You can find it as a free PDF online.
It's the equivalence principle. Basically it means that if you are accelerating in a spaceship there is no way to tell whether you are accelerating or just sitting on the surface of a planet.
Edit: Disregard this. I see WannabeNewton beat me to it.
The atom is in a superposition. And since the cat's life is dependent upon the atom having decayed, it can be said that the cat is also in a superposition. (until it is measured)
I'm not sure I understand what you are saying.
But as for the experiments I talked about in my earlier post, this Wikipedia page has a few examples
http://en.m.wikipedia.org/wiki/Quantum_superposition#section_3
The way I understand it is that when you roll a die to decide if a cat dies, the die will always be in one of the six states it can be in, whereas with a decaying atom, it is in a superposition of the different states before it is measured.
Also, with the die, the randomness is only due to our...
You're thinking from a purely classical point of view. It seems logical to just say that we don't know about the state. But many experiments have proven that's not the case.
The things you are saying are correct (at least in the macroscopic world) It's when you get down to the very small...
Directions are never absolute. What someone calls up on one side of the globe is called down by someone on the other side. It all depends on the reference frame you choose. Just because they aren't absolute doesn't mean they don't have meaning.
The usual interpretation is that it is a "wave of probabilities" The amplitude of the wave is related to the probability of finding the electron there. So really nothing is waving, it's just a way of describing the particle.
It's not the fact that the cat is in a box that makes it both dead and alive, it is the fact that the box contains a vile of poison that is a tracked to a Geiger counter that measures a single radioactive atom. If the atom decays (which is a random quantum mechanical process) then the Geiger...
No. A photon does not have a rest frame, so to say what happens from the point of view of a photon makes no sense.
https://www.physicsforums.com/showthread.php?t=511170
Now I see where this book is getting lightyears as a unit if time. In the Minkowski metric the time component is often multiplied by c (the speed of light) to make the units the same for all components. So if you have events that happen a year apart, their time separation would be c times 1...