Einstein

Okay so it has been four days of the start of this blog. Today I will talk about Einstein.

E=mc2

E=energy
m=mass(kg)
c=speed of light



E=mc2 is actually an Mass–energy equivalence theory  that Einstein invented. E =mc2 is the concept that the mass of a body is a measure of its energy content. This revealed the energy in atoms that led to nuclear bombs and nuclear power.
  Einstein also invented the theory of relativity.  Relativity can be separated into two kinds. General relativity and  special relativity. Time is relative because it depends where you measure it form. Distances and speed are relative too. If you are in a car and another car whizzes past you, for instance, the slower you are travelling, the faster the other car seems to be moving.