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THE MASTERCLASS Manual: The Theory of Relativity.
, 2
Author:Albert Einstein (1905,1915)
Core Thesis: Space and Time are not independent, absolute entities; instead they are woven together into a
dynamic,four dimensional fabric called Space-Time.
Module 1: The Breakdown Of Classical Physics
[1.1] The Newtonian paradigm
For over two centuries, Sir Issac Newton's mechanics governed the scientific world.
Newton's universe relied on two absolute pillars:
●Absolute Time: Time flows uniformly across the universe, completely independent of the
observer or their state of motion.
● Absolute Space: Space is an immovable, static stage or background in which physical
phenomena occur.
[1.2] The Luminiferous Ether Hypothesis
In the 19th century, physicists discovered that light behaves as a wave. Since mechanical
waves(like sound) require a medium to travel through, scientists hypothesized that the entire
universe was filled with an invisible, massless and rigid substance called the “Luminiferous
Ether”. It was assumed to be the absolute frame of reference at rest.
[1.3] The Michelson-Morley Experiment (1887).
Designed to detect the earth's motion through this “Ether”(The Ether wind),this experiment
became the most famous failed experiment in history.
●The result- The speed of light was found to be completely identical in all directions, regardless
of the earth's movement.
● Conclusion- The Ether does not exist. The speed of light is invariant. This shattered the
foundation of Newtonian Relativity.
Module 2: Special theory of Relativity (STR)-1905.
Albert Einstein solved the crisis of classical physics by publishing the “Special Theory
Of Relativity”. In 1905.
This Theory applies strictly to “Inertial Frames of Reference”. Systems moving at a constant
velocity.
[2.1]. The Two postulates of STR.
●The Theory of Relativity. The laws of physics are identical and take the same mathematical
form in all Inertial Frames of Reference.
● The constancy of the speed of the light.
THE MASTERCLASS Manual: The Theory of Relativity.
, 2
Author:Albert Einstein (1905,1915)
Core Thesis: Space and Time are not independent, absolute entities; instead they are woven together into a
dynamic,four dimensional fabric called Space-Time.
Module 1: The Breakdown Of Classical Physics
[1.1] The Newtonian paradigm
For over two centuries, Sir Issac Newton's mechanics governed the scientific world.
Newton's universe relied on two absolute pillars:
●Absolute Time: Time flows uniformly across the universe, completely independent of the
observer or their state of motion.
● Absolute Space: Space is an immovable, static stage or background in which physical
phenomena occur.
[1.2] The Luminiferous Ether Hypothesis
In the 19th century, physicists discovered that light behaves as a wave. Since mechanical
waves(like sound) require a medium to travel through, scientists hypothesized that the entire
universe was filled with an invisible, massless and rigid substance called the “Luminiferous
Ether”. It was assumed to be the absolute frame of reference at rest.
[1.3] The Michelson-Morley Experiment (1887).
Designed to detect the earth's motion through this “Ether”(The Ether wind),this experiment
became the most famous failed experiment in history.
●The result- The speed of light was found to be completely identical in all directions, regardless
of the earth's movement.
● Conclusion- The Ether does not exist. The speed of light is invariant. This shattered the
foundation of Newtonian Relativity.
Module 2: Special theory of Relativity (STR)-1905.
Albert Einstein solved the crisis of classical physics by publishing the “Special Theory
Of Relativity”. In 1905.
This Theory applies strictly to “Inertial Frames of Reference”. Systems moving at a constant
velocity.
[2.1]. The Two postulates of STR.
●The Theory of Relativity. The laws of physics are identical and take the same mathematical
form in all Inertial Frames of Reference.
● The constancy of the speed of the light.
