3. Introduction
• Albert Einstein
March 14, 1879
Theory of relativity
1905/1915
• German mathematician and physicist
• Nobel Prize
• He finally died April 18, 1955
1921
4. Introduction
General theory of relativity
• Galileo, Isaac Newton and Einstein
• Describes the history and expansion of the universe, the
physics of black holes and the motion of the planets
• Einstein's relativity theory is simple and consists of just
three rules
Special relativity
1905 1915
General relativity
6. General information
• Developed by Albert Einstein in 1905.
• Space and time are linked for objects that are moving at a constant
speed in a straight line(=no acceleration).
• If acceleration is introduced it’s general relativity.
• Equation: E = mc^2 (energy equals mass times the speed of light
squared.)
7. It is based on two postulates
• The laws of physics are identical in all inertial systems (frame of
reference in which a body remains at rest or moves with a constant
speed).
• The speed of light in a vacuum is the same for all observers,
regardless of the motion of the light source.
