[Free Registration/Login may be required to access all resource tools.] Students investigate behaviors of waves, including interference, reflection, refraction, and diffraction.

Access hundreds of teacher-tested, practical physics lessons on this well-organized, illustrated site. Find just the right demonstration, attention-grabber, or lab for any physics teaching objective at your fingertips.

[Free Registration/Login may be required to access all resource tools.] Explore the characteristics and behaviors of energy transferred by transverse waves.

Light is a form of energy. We see it in many different forms all around us. It's the sunlight that pours through your bedroom window and wakes you up. Images and in-depth information on light can all be accessed in this article.

A collection of video lectures from a fundamentals of physics course taught at Yale University. The course is an introduction to physics and discusses Newtonian mechanics, special relativity, gravity, thermodynamics, and waves. Course...