Light

• Electromagnetic radiation
• Waves
• EM spectrum

Thermal Radiation: Light as Thermometer

• temperature and glow color connection: backbody radiation
• invisible heat: one canine example; others; IR world gallery
• Wien's law
  spectrum of the Sun
  Orion colors
  starlight spread out: objective prism images of the Hyades star cluster

Doppler Effect: Light as a Speedometer

• animation

Matter Overview

• Chemical elements
• Atom components