A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a large amplitude, a high pitched sound has a high frequency. Musicians and ...

This physics course provides foundational knowledge for study in engineering, food technology and physical sciences. The emphasis is on applying physical principles to problems involving electricity, ...

Exploring the physics phenomenon where light waves penetrate a boundary even when total internal reflection occurs.

Light is well known to exhibit both wave-like and particle-like properties, as imaged here in this 2015 photograph. What's less well appreciated is that matter particles also exhibit those wave-like ...