PhysicsCorePHY-SR-081
Four-Vectors
spacetime vectors, invariant mass, Lorentz invariants
- Difficulty
- 3 / 5
- Importance
- 4 / 5
- Study time
- 3.5–7 h
- Kind of work
- Theory
Why it matters
Galilean intuition fails at high speeds; SR redefines space, time, momentum and energy — required for QM, particle physics and GR.
Where it is used
GPS time corrections, particle accelerators, nuclear energy E=mc^2, relativistic electronics, astrophysics.
How you know you have learned it
Explain/derive key result from memory + solve 2 non-routine checks.
Resources
- Introduction to Special Relativity (French) — A. P. French Book
- Introduction to Special Relativity (French) — A. P. French Book
- Spacetime Physics — Taylor & Wheeler Book