Special relativity theory describes how measurements of events are made by observers in different states of motion. Its key postulates are that the laws of physics are the same in all frames of reference moving at constant velocities, and that the speed of light is constant regardless of the observer's motion. Key concepts are that simultaneity is relative, time dilation and length contraction occur, mass and energy are equivalent according to E=mc^2, and the speed of light is the cosmic speed limit.

1. Consequences of Special
Relativity

2. Let’s Recap!

3. What is Special Relativity Theory?
•Special Relativity Theory is a
theory which predicts how
events are measured with
various observers who are in
motion with respect to an
event.

4. Postulates of the Special Relativity
•Consistent Law Principle- The
laws of physics are the same in all
frames of reference that are moving
at a constant velocity with respect to
one another.

5. Postulates of the Special Relativity
Constancy of Speed- The speed
of light in an empty space has the
same magnitude for all observers
regardless of their velocity.

6. 5 Key Concepts of Special Relativity

7. 5 Key Concepts of Special Relativity
•Relativity of Simultaneity
•Time Dilation
•Length Contraction
•Mass-Energy Equivalence
•Cosmic Speed Limit

8. 1. Relativity of Simultaneity
•If two events are separated in
space or position, it is absolutely
impossible for the two events to
occur simultaneously for two
observers.

9. 1. Relativity of Simultaneity
•An event is only simultaneous
for an observer, but not
necessarily simultaneous for
another observer.

10. 2. Time Dilation
•The faster you move
through space, the
slower one moves
through time

11. 2. Time Dilation
•Occurs due to a relative
velocity and difference
in gravitational field.

12. 3. Length Contraction
•An observer at rest would
observe a moving object’s
length to be shorter than its
proper length.

13. 4. Mass-Energy Equivalence
•Anything that has a mass has an
equal amount of energy.
E=mc^2

14. 4. Mass-Energy Equivalence
•Everything that has mass,
even those at rest, have
inherent energies.

15. 4. Mass-Energy Equivalence
•C can never be attained or surpassed by
any massive object.

16. 5. Cosmic Speed Limit
c= 300,000,000 m/s

17. 5. Cosmic Speed Limit
•As object travels faster, the more
massive it needs to be.
•As objects become more
massive, more energy will be
required for it to move faster.