Know for his work in Physics...
Albert Einstein developed the general theory of relativity, one of the two pillars of modern physics. He was most known for his mathematical equation about the nature of energy, E=MC². It’s the most famous equation in the world, it tells us that mass and energy are related. It is the equation that helped prove that matter and energy are not separate but different forms of the same thing. It means the energy contained in matter (e) is equal to the mass of the matter (m) times the speed of light (c) squared. The idea is that energy (heat, movement, etc) can be converted into mass, and the difference grows less the faster you go. The more energy you have the more mass you have. This explains why you cannot go faster than the speed of light, because you'd end up with infinite mass and would need infinite energy. This equation is still useful today, it is also use for creating nuclear plants. Albert Einstein invention impacted science greatly.