relativity

hey, isn't the twin on the rocket getting older relative to his twin on Earth (since to the twin on the rocket the Earth looks like it's travelling close to the speed of light)? In this analogy it's always the twin on the rocket who stays the same age (or ages only slightly) and his earthly twin...

These guys wrote a special raytracer that takes into account the speed of light. Then used it to run some totally, totally cool demos.. http://www.anu.edu.au/Physics/Searle/index.html

scenario Let's imagine a super-massive wheel as big as a galaxy (or even bigger if necessary), with fixed spokes/radials joining the circumference to the center. Now, let's consider 3 points within that wheel upon a single radial. One point on the circumference(z), one point at center(x), and...

What role does special relativity play in the co-evolution of galaxies?

You guys probably get a lot of these: sorry if this has been posted before many times. I thought I understood General Relativity, until I read a question posted by RussDill a while ago. Now he has got me confused again... Scenario: A ship is 100 meters long (at rest w.r.t. the barn), and...

RR: Relativity is an "unproved theory"/"has nothing to do with physics" Check out this amazing topic on RaptureReady about scientists messing up a light beam. The real fun begins on page 2 or so. It almost seems like *any* claim science makes is automatically disqualified in the mind of these...

Does it require a mind?

I think many of us have been wondering what lifegazer could possibly have that he considers proof, especially when it comes to special relativity. Wait no more. Due to the magic of google and cut and paste (I'm not the first, lifegazer has cut and pasted this across many forums and been banned...

This is one I haven't gotten a handle on... An asteroid is seen approaching earth at 0.9c and an expedition is sent to intercept and deflect it. The astronauts land on it (how doesn't matter, they just do) and set up the deflection engines to cause the asteroid to change its speed. Earth-based...

http://www.kuro5hin.org/story/2003/6/13/6330/21089 I also reccomend the whole site (www.kuro5hin.org). It is my main page!

This is really directed to Tez, although others are welcome to help as well. I was reading in "Exploring Black Holes" (Wheeler/Taylor) than Einstein's General Relativity equations were not derived, but are written down in similar fashion to Newton's equations. Those equations are not in the...

Relativity. Hard to explain in haiku. But I think I'll try. First, there's "special;" it Has no acceleration Only about speed. For all observers Who aren't speeding up or down. Physics is the same. Imagine two guys Floating out in open space. They're named Al and Bert. If they move apart...