Page 47 - DK Life Stories Albert Einstein by AELC

A very important one was that the laws of

physics still work the same way on an object
even if that object is inside something that is

moving. For example, if you are in a bus and
throw a ball straight up in the air, that ball will

come back down in your hand even though the
bus is moving. This third paper introduced

the world to what became known
as Albert’s “Theory of

Special Relativity.”
The fourth of Albert’s “miracle

year” papers was published on
November 21. In this paper, Albert

discussed the amount of energy that
was inside any object. There were

two parts to this. The first part was
kinetic energy, which is how much

energy an object has when it is moving.
The second part was rest energy, which

is how much energy an object has when
it isn’t moving. The ideas in this paper

introduced the world to Albert’s most
well-known equation: E=mc .
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