## How we came to know the cosmos:

A history of science with the science left in.

**Pre 20th Century theories**

2. Reflection, Refraction, and Diffraction

2. Reflection, Refraction, and

Diffraction

6. 19th Century Particle Theories

6. 19th Century Particle

Theories

**Quantum Mechanics**

6. Superconductors and Superfluids

6. Superconductors and

Superfluids

9. Heisenberg's Uncertainty Principle

9. Heisenberg's Uncertainty

Principle

10. Schrödinger's Wave Equation

10. Schrödinger's Wave

Equation

**Quantum field theories**

The Star Garden is a science news and education website run by Dr Helen Klus.

*How we came to know the cosmos* explains the simple discoveries we made in prehistoric times, and how we built on them, little by little, until the conclusions of modern theories seem inevitable. This is shown in a timeline of the universe.

The Star Garden covers the basics for KS3, KS4, and KS5 science revision including SATs, GCSE, and A-level physics.