Saturday, 1 March 2014

Anti Matter and Dark Matter

Antimatter is NOT dark matter. Dark matter is something that we have yet not discovered , but we have theoretical proof of it's existence . We know it exists because it affects light and other properties in the universe in a way that currently known matter cannot describe.
The most widely accepted explanation for these phenomena is that dark matter exists and that it is most probably composed of weekly interacting massive particles (WIMPs) that interact only through gravity. Alternative explanations have been proposed, and there is not yet sufficient experimental evidence to determine which is correct. Many experiments to detect proposed dark matter particles through non-gravitational means are under way.

 Dark energy is used to describe the accelerated expansion of the universe. We expect expansion to be slowing down but it’s actually increasing so there must be some energy we don’t know about. Einstein’s equation E=mc^2 tells that energy and mass are interchangeable, so dark energy and dark matter are essentially the same thing.

So antimatter is a broad term for a whole bunch of particles called antiparticles. Every particle theoretically has an antiparticle with the same mass but opposite charge, therefore when they come into contact with each other they annihilate each other and cause decay (into other forms of energy/particles). Carl Anderson discovered the POSITRON. It is the antiparticle of the ELECTRON. Both are known to exist and scientists can create them at will. No, it’s not the end of the world. Positrons ONLY annihilate electrons. All elementary particles have a known antiparticle. 



The whole of science is nothing more than a refinement of everyday thinking.
Albert Einstein

No comments:

Post a Comment