Modern Physics Notes Pdf

MIT offers free PDF lecture notes for their "8.04 Quantum Physics" and "8.20 Special Relativity" courses. These are high-level, rigorous, and include problem sets.

This equation describes how the quantum state of a physical system changes over time.

A cornerstone of any modern physics PDF: you cannot simultaneously know a particle’s exact position and exact momentum. The act of measurement inevitably disturbs the system. This is not a technological limitation but a fundamental property of nature.

Light shining on a metal surface ejects electrons only if its frequency exceeds a threshold. This proved that energy is quantized:

In a modern physics study guide, the key takeaways from Special Relativity are: