Light and other kinds of electromagnetic radiation

You may want to study how to use scientific notation , particularly if you didn't take ASTR 121.

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.

ASTR 122 course home page

Updated 26 September 2007

Davison E. Soper, Institute of Theoretical Science, University of Oregon, Eugene OR 97403 USA