Saturday, January 17, 2009

The Fifth Force

The work of a Hungarian scientist Roland von E'otv'os in the early 20th century involved testing the principle of equivalence, a postulate of Einstein's which stated that gravity affecting an object is independent of their composition. This principal is one of the fundamental assumptions of Einstein's General Theory of Relativity and naturally, could not be wrong, E'otv'os declared a null experiment since he discovered an error in his calculation.

And as almost everything in Physics is discovered from “mistakes”, Dr. Ephraim Fishbach and his fellow Physicists at Purdue University set out to prove the existence of a fifth force, related to hypercharge, opposing the force of gravity. The range of this force, they figure is from a few millimeters to cosmic lengths. Even though it's not infinite as gravity, it's as weak as gravity. And thus it is difficult to experiment with. Nonetheless, working with E'otv'os results and re-performing his “mistaken” experiment Fishbach and friends seek to find the effect of this illusive force. So much so that the Physicists have to perform their experiments a kilometer below the surface to find minimal traces of it.

A solid proof of the this force seems to be nowhere in sight and many predict that the effect of its discovery would not be more than causing publishers to release new editions (which they are always happy to) so that students may learn of a new force along with the existing four and find it harder to tell which is which on tests and exams.

It's also unlikely that this fifth force would disprove General Theory of Relativity because it seems to be so insignificant, but I could not help but hope it does. I mean, have YOU read that theory? It's mind blowing, and I am no Einstein.
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By Kowsheek Mahmood
Ryerson University, Toronto, Canada
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The Aftermath Publications, Issue 2
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