# Relativity

Please Note: This is my own, rather poor attempt at a derivation of some of the important principles of Relativity. In this discussion I intend to keep the mathematics as simple as possible.

The study of Relativity can be split into two major sections:

1. Special Relativity - which considers the properties of space and time in uniformly moving frames of reference.
2. General Relativity - which considers the properties of space and time in accelerating frames (Ie. Gravity) of reference.
3. Cosmology - which considers the properties of space and time in the Universe at large.

## The Conclusions Drawn from Relativity

Some of the conclusions which can be drawn from the mathematics of relativity are:

• As spacial lengths are compressed we observe that time is proportionally stretched. Therefore Time is in fact a "dimension" the same as the normal three spacial dimensions. We therefore can observe four dimensions around us.
• Energy and mass are mathematically equivelant, therefore it is reasonible to assume that they are in essance the same.
• Space in a gravitational field is contracted.
• Time in a gravitational field is dilated.
• The frequency of light is Red Shifted in a gravitational field.
• The speed of light is slowed in a gravitational field.
• Light rays are bent by gravitational fields.
• Space and Time are equivalent
• Space and Time have a beginning
• We live in a multi-dimensional universe.