waves
by chase strange
![Mind Map: waves](https://www.mindmeister.com/image/xlarge/165400402/mind-map-waves.png)
1. electromagnetic waves
1.1. radio waves
1.2. microwaves
1.3. infrared waves
1.4. visible light
1.5. ultraviolet radiation
1.6. X-rays
1.7. gamma rays
2. mechanical waves
2.1. longitudinal wave
2.1.1. rarefaction
2.1.2. compression
2.1.3. sound