User talk:Tai89ch

Electric charge moving in a catenary
In the article Catenary, you wrote:

A charge in a uniform electric field moves along a catenary (which tends to a parabola if the charge velocity is much less than the speed of light $$c$$).

What do you mean that it tends to a parabola? A catenary and a parabola is two separate things and one cannot tend to the other. And what does the speed of light have to do with this? Unless you give a better explanation to this, the statement will be removed. --Kri (talk) 13:38, 30 December 2009 (UTC)