Einstein Completes His Theory of General Relativity

At a glance:

Article abstract: Einstein proposed that physical laws appear the same in any reference frame, even one accelerated under the influence of gravitational fields.

Summary of Event

When Albert Einstein was young, there already existed a two-hundred-year-old principle of relativity. This principle stated that there is no standard of absolute motion or rest. The velocities of all objects are defined only in relation to other objects; this is a statement of Galilean relativity, named after Galileo (1564-1642).

On the other hand, changes in velocity, or...

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