Students complete this Beer's Law activity in class. Students examine the attenuation of various thicknesses of transparencies. From this activity, students will understand that different substances absorb light differently. This can...

A tutorial on the electromagnetic and visible spectra. Discusses dispersion and how perceptions of white and black are related to the visible light spectrum.

The meaning and cause of refraction--as well as Snell's law of refraction--are discussed. Includes an interactive problem-solving form in which visitors relate angles of refraction to the incident angle and the indices of refraction.

35 messages on 1 John that are divided into five main themes: "Maintaining Fellowship," "Maintaining Truth," Maintaining Righteousness" "Maintaining Love," and "Maintaining Assurance."

An illustrated tutorial which takes students step-by-step through the process of drawing ray diagrams.

An easy experiment through which students learn about light rays and the electromagnetic spectrum. Requires a TV, its remote, and a hand-held, flat mirror.

This article discusses the historical figures who contributed to our understanding of the nature of light, x-rays, Quantum ElectroDynamic (QED) theory, and so on.

A tutorial which introduces students to the dispersion of light in more detail, and investigates the reasons why different frequencies of light bend or refract different amounts when passing through the prism.

Using the diagram provided, calculate where a ray of light coming through a pinhole hits an image plane.

Educational site provides activities to compliment a unit on the reflection of light. Offers challenge activities that are designed to motivate and stimulate interest in the classroom.

In this physics tutorial, students explore the phenomenon of the fact that without light, there would be no sight.

The story of the word X-Ray is one of great thinkers. French philosopher Rene Descartes isolated the letters X, Y and Z to stand for unknowns, and centuries later, Wilhelm Rontgen discovered the X-ray, using the X for the unknown nature...

Lucianne Walkowicz shows us the waves just beyond our perception: microwaves, radio waves, x-rays and more. [5:58]

Use this tool to learn facts about the range of the electromagnetic spectrum, from radio waves to gamma rays.

[Free Registration/Login Required] Explore how Snell's Law arises out of the principle of least time; understand how light rays change direction at interfaces between materials using this interactive simulation. A PDF worksheet and a...

Explains where visible light fits into the electromagnetic spectrum and the wavelengths for the different colors we see.

A thorough, multipage discussion of color and color television sets that explains how an image is formed on the television using red, green, and blue light. Understandable discussion, excellent graphics, and many interactive Java applets.

A simple experiment through which students observe the connection between color and heat and prove that dark-colored objects and light-colored objects heat at different rates, even when exposed to the same heat or light source.

Part of an anecdotal history on optics and the study of light. Extremely thorough treatment of the scientific evidence which led scientists to believe in the particle nature of light. Includes a short biographical sketch and discusses...

A brief summary and illustrations of light and how the lights rays are reflected and bent.

Did you know that light is a form of energy and always travels in a straight line? Discover some more interesting facts about light.

Through an illustrated tutorial and some interactive practice problems, students learn about the law of reflection of light.

In this illustrated physics tutorial, students investigate the connection between light reflection and light refraction.

Ray diagrams are useful tools for determining the location of an image as produced by a concave mirror. Of all the rays which emanate from the top of the object arrow and are incident to the mirror, there are two rays whose behavior at...