How has Albert Einstein's E=mc^ (*^=2, square) helped us? It's a concept and Important one.?

Was it important? No, it was just the most important discovery of the 20th Century. Period.

It taught us almost everything we know from modern physics.

Google, "benefits of theory of relativity"

The Expanding Universe

The Big Bang Theory

Time Travel

Black Holes

Gravitational Waves

Gravitational Lensing

Reverse Gravitational Lensing

Atomic Energy

The Neutron (Star) Dance

Quantum Physics

http://dsc.discovery.com/tv-shows/curiosity/topics...

E = mc^2 is the equation that relates matter to energy. That's saying that all matter; you, me, food, rocks, air is really just a container of energy. This concept has revolutionized our understanding of physics and shot us off "into the direction of" quantum mechanics and other areas (never said it explained it). To the average person it hasn't really done much, maybe helped with power production or some other things. But to the scientific community and to the overall knowledge of mankind it was a major leap.

It is of use in nuclear power plants and in the study of astronomy, physics and quantum mechanics.

The formula merely shows how to calculate the energy released by the conversion of a quantity of matter to energy. It is not an explanation for relativity or light speed.

. .

That equation was used to build the atomic bomb that ended World War II with Japan. It is also used to generate 19% of the electric power in the USA, 15% in Europe, and 30% in Japan.

it forms the theoretical basis which helped lead to the discovery of nuclear energy.