Talk:Theory of relativity

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Mass depending on direction

The article states:

There is a logical difficulty, however, to an increase in relativistic mass. Such increase would only exist in the direction of motion, and the rest mass would remain intact with respect to a force applied in a direction orthogonal to velocity. Neither mass nor energy is a vector, and the notion of the mass of an object having different values depending on the direction of an applied force is illogical.

As RSchlafly on 8 July 2007 (EDT): This paragraph is nonsense [..] The relativistic mass applies no matter what the direction of the force is.

AugustO 15:45, 10 January 2012 (EST)

Neutrinos now obey speed limit

The observation sited in the first sentence of this article has been discredited. [1] It appears that a loose fiber-optics cable is to blame for the misreadings. I suggest editing this first sentence, and any other mention of this in the article.--CarloP 18:51, 2 March 2012 (EST)

Issues concerning the neutrino experiment are not yet fully resolved. No problam: I replaced it with another counterexample.--Andy Schlafly 19:12, 2 March 2012 (EST)