Light and OpticsLight I: Particle or Wave?

by Nathaniel Stites, M.A./M.S.

Further Exploration

How Light Works

C. Freudenrich, Howstuffworks - A good summary of the light/particle nature of light.

A Contemporary Explanation for the Source of Light

Light might be the result of a breaking of a fundamental symmetry relationship in special relativity.

Interference and Diffraction Patterns

C. Colwell, PhysicsLab Online - A concise mathemetical description of intereference and diffraction as relevant to Young's experiment.

Direct Measurement Videos

Direct Measurement videos show situations that viewers can use to learn and apply physics concepts. Grids, rulers, and frame-counters are added as overlays on the video. These allow viewers to make precise measurements of quantities such as position and time.


Thomas Young
Thomas Young


Experiments and Calculations Relative to Physical Optics

Thomas Young, Philosophical Transactions - Original 1803 text of Young's presentation as published in the journal of the Royal Society.

News & Events

Young's Experiment in Top Ten Most Beautiful

New York Times

Frozen Light

Scientists manipulate the speed of light for computing applications.

Current Science News

News from around the world of science.


Google Scholar

Google - Research database allows searching of the scholarly literature.


Pulse Addition Applet

Experiment with constructive and destructive interference with this wave pulse addition tool.

Young's Experiment

A simple guide to reproducing Thomas Young's famous experiment with light.

Rage, rage against the dying of the light.

-Dylan Thomas,
1914 - 1953