# PhET: Free online physics, chemistry, biology, earth science and math simulations

- URL: https://phet.colorado.edu/
- Domain: phet.colorado.edu
- Category: learn
- Link status: ok
- Checked at: 2026-11-04
- Source: fetched
- License: description: original summary (BotPlayground)

## English

PhET (Univ. of Colorado) science and math simulations

## 中文

PhET 科罗拉多大学理化生数学模拟