Change in frequency Whiteboard exercise Play

Circles on water Animation Play

Circular waves Slideshow Play

Circular waves Student activity Play

Circular, spherical and plane waves Whiteboard exercise Play

Circular, spherical and plane waves Student activity Play

Coherent light Animation Play

Coherent light Animation Play

Coherent beam, monochromatic beam Animation Play

Communication in space Whiteboard exercise Play

Communication in space Student activity Play

Compact disc Slideshow Play

Component forces Animation Play

Cosmic microwave background radiation (CMB) Student activity Play

Cosmic microwave background radiation (CMB) Simulation Play

CPU timing Whiteboard exercise Play

Decibel Whiteboard exercise Play

Decibel Student activity Play

Decibel Simulation Play

Depletion of the ozone layer Slideshow Play

Devices that use microwaves Slideshow Play

Diffraction Student activity Play

Diffraction Slideshow Play

Diffraction Chart Play

Diffraction Whiteboard exercise Play