This demonstration provides an aesthetic way to view convection currents in fluids. Water warmed by an electric circuit mixes with the surrounding cooler water creating turbulence effects that bend light; the resulting...

This site provides an activity on reflection using just three mirrors and duct tape. A kaleidoscope effect is produced to show multiple images of an object, and a corner mirror is created to demonstrate a reflector that...

This website from the Exploratorium provides a demonstration of total internal reflection. The activity uses a fish aquarium to illustrate how a transparent material like water can act as a reflector. The site provides...

This site from the Exploratorium contains a simple demonstration of how objects can disappear when placed in a liquid. The activity uses glass objects and Wesson™ oil. The site provides an explanation of the refraction...

This site from the Exploratorium provides an interesting activity for building a "two-way" mirror. Partners sit on opposite sides of the mirror and adjust the illumination until each gradually assumes aspects of the...