Light and other kinds of electromagnetic radiation

The spectrum of electromagnetic radiation.

The speed of light.

Wavelength and frequency.

Graphs of intensity vs. wavelength.

How light is made from random motions.

Light is made of photons.

Conservation of energy.

How light is made from ordered motion of electrons in atoms and molecules.

Measuring the spectrum of light from the Sun tells us what the Sun is made of.

The wavelength of light emitted from a moving object is shifted.

Updated 26 September 2007