Einstein's theory of relativity deals with Newtonian physics when energies or velocities are near the
speed of light. Relativity is usually thought of as modern physics since it was developed at the start
of the 20th century and could only be tested in the realm available to scientists by high technology.
However, relativity primarily completes the revolution that Newton started and is also highly
deterministic as is much of classical physics.
In the holistic viewpoint of relativity theory, concepts such as length, mass and time take on a much
more nebulous aspect than they do in the apparently rigid reality of our everyday world. However,
what relativity takes away with one hand, it gives back in the form of new and truly fundamental
constants and concepts.
The theory of relativity is traditionally broken into two parts, special and general relativity. Special
relativity provides a framework for translating physical events and laws into forms appropriate for
any inertial frame of reference. General relativity addresses the problem of accelerated motion and
gravity.
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