String Theory

what is string theory?

yesterday, i watched the programme Elegant universe aired in PBS after recording. eventhough i watched it late night after my xmas shopping... it is worth it and now i can watch it again and again.

the very important concept what physicists in the world trying to achieve...

unification -> define the universe we know in a simple equation.

all the theories we know of...
1) newton's theory of gravity
2) einstien's theory of relativity - gravity
- soft nature
- sun's fabric trampoline of time and space where all the planets revolve.
3) electomagnetic theory - electricity & magnetism
4) quantum theory - strong nuclear force, weak force
- violent nature
- particles - atoms - electrons, protons neutrons
- atom bomb

big bang theory and black hole describes that there is a tiny particle.

these theories are essentially trying to define how the universe works. first 2 theories meant to describe the world of large particles whereas last 2 meant to describe the world of minute particles.

these theories are proved at the lab and through observations, hence they are safe and permanently safe.

Around 1980, there comes another promising theory called 'string theory'. it simply describes that the main ingredient of matter is 'string' which exists in 11 diminensions. And, there are 5 variants that describe this theory. this theory apparently solves the unification of all the theories that einstein wanted to solve.


more to come...