HiggsBoson

If the Klein bottle was made of a conductive substance. How would an electrical charge behave on it? Remember that hollow conductors have charges build up on the outer surface.

Traveling forwards in time is relatively easy. When you walk, technically you are travelling forwards in time (a very tiny bit). Travelling backwards requires the bending of spacetime back on itself, we can currently do this with intense lasers, and can make subatomic particles travel back in time, but we can only make it travel back in time until the "time machine" was turned on. If we ever reach the point when we could do this, it would have to be very closely guarded, to prevent tampering.

Object 1 will see the light first. Although the speed of light will appear the same to both of them, object 2 is further from the source therefore the light takes more time to get there.

Crime, or in this case cheating doesn't exist if you are not caught. Although if you are able to live with yourself knowing that you wrongfully acquired what you got. Then it is justifiable.

If anything can be divided infinitely, then infinity can exist.

Can someone explain how the Casimir effect works? Thanks.

The problem is not that we cannot test on humans (in this case), but that we cannot go fast enough to see a distinguishable effect on living organisms. A test has been done with atomic clocks on rockets orbiting the Earth, and we have seen a slight variation in time, agreeing with Einstein's predictions. If this were possible though, the ants on the rocket would age slower than those on earth. This is similar to a thought experiment known as the Twin Paradox (http://en.wikipedia.org/wiki/Twin_paradox). The change in time happens during acceleration and deceleration and is known as the desynchronization effect.

I've read that there has been a study involving South African women with a Vaginal anti-HIV gel. Does anyone else see a ethical problem with a clinical trial with a medicine that does not 100% protect against HIV? Not only that, in the study placebos were given to some women, basically leaving them to get infected with HIV. What are your opinions on this issue?

From what I've read, the Higgs Boson particle is the last particle of the standard model to be discovered. My question is: What does the Higgs Boson do, and what is its significance to the standard model? Thanks.

Relativity is complicated, and there isn't a "simple" explanation if you want to throughly understand it (although I would recommend you research special relativity if you really want to understand it). Our technology is too primitive to accurately test relativity, although all our current tests agree with Einstein's theories of relativity. I'm not sure if your last question was rhetorical, but I'll answer it anyways. No we did not. In fact, to calculate the power we needed and the gravitational forces we needed to overcome Earth's gravity, we only needed used Newton's equations. Einstein thought way beyond his time, as with many other theoretical physicists; and his theories, if correct, will prove very useful in the future, assuming that the human race still exists.