Here’s an interesting video on quantum physics, presented in a fairly lay person approachable manner:
Where this makes me a little paranoid is the fact that one of the central claims of safety for the LHC is that the types of collisions they’re going to create happen all the time in the atmosphere, and at higher energies, and the Earth hasn’t been destroyed yet, so it must be safe. The only problem is that we’re not observing the collisions in the atmosphere. The whole point of the LHC is to put an observer into the equation. Which, if what we know about quantum physics is any guide, totally changes the situation, and may effect what is actually happening in the collision.
A side thought, the plan is to get one stream going 99.99….% the speed of light in one direction, and another going the same speed in the other direction. So, if you used one as the frame of reference for the other, or even if you just measured one against a frame of reference like the galactic center, which we’re moving quite fast relative to, wouldn’t you have a fair shot at having something moving faster than the speed of light? Or is this where relativity makes things all weird with time actually slowing down around the the particles as they increase in speed? And if so, with the rapid deceleration once they hit, is it possible to create something like a time shock wave? I need to read up on my advanced physics at some point. The “how does stuff work” mixed with the mind bending thought experiment factor makes it too interesting to not think about.
Also, for the “this happens in nature all the time” argument – I can see how one particle traveling at that speed could hit another one that is relatively fixed (like in the atmosphere), but having two, and even more so, two whole groups of them, traveling in exactly opposite directions at nearly the speed of light and colliding exactly head on doesn’t seem like something that would happen that often. With the size of the universe, I’m sure it probably has happened, but I have a hard time thinking it does that so frequently that “the earth is still here” argument is all that waterproof.
Either way, I still get a laugh every day when I get my rss update from
http://www.hasthelhcdestroyedtheearth.com
Though really, they’re just getting things going in one direction right now. No real colliding yet.








