Idea of increased mass at relativistic speeds

[pmb_phy]

Not every single prediction of relativity has been tested, for example I don't know of any observations of length contraction (which would be rather difficult in practice). However, practically all tests so far have supported predictions of relativity, and the few that apparently don't, have problems:
http://math.ucr.edu/home/baez/physics/Relativity/SR/experiments.html

Predictions of the results of experiments which were derived from the concept of length contraction can readily be tested in the laboratory and they concern current carrying wires. See

http://www.geocities.com/physics_world/em/rotating_magnet.htm

and scroll down to where it says "Charged Density on a Moving Wire."

Pete

 

[JCCol]

If We have two Atoms.
1. Atom A. is a Hydrogen Atom at rest.
2. Atom B. is a Hydrogen Atom traveling at Light speed.
Question is, How big is Atom B. compared to Atom A. Exactly?
What are their size differences?

I will take it that you mean almost the speed of light such as 99.995% the speed of light because the faster you approach light the more and more energy you add to go faster but this energy just goes to the mass so you never get to the speed exactly.

I can't give you the exact equation but you can look on this site if you want for the equation:

http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html

 

[jtbell]

Predictions of the results of experiments which were derived from the concept of length contraction can readily be tested in the laboratory and they concern current carrying wires.

Yes, of course. I was referring to "direct" observations of length contraction, similar to our direct observations of time dilation. Most relativity skeptics probably wouldn't be satisfied with indirect observations.

 

[pmb_phy]

Yes, of course. I was referring to "direct" observations of length contraction, similar to our direct observations of time dilation. Most relativity skeptics probably wouldn't be satisfied with indirect observations.

Correction. Most relativity skeptics can't be satisfied, period.

Pete