The reflection of sound waves Student activity Play

The reflection of sound waves Animation Play

The resistance of a light bulb filament Student activity Play

The rotation of a frame Animation Play

The rotation of the frame Student activity Play

The rotation of the frame Whiteboard exercise Play

The shape of the field lines Animation Play

The shape of the wavefront Animation Play

The significance of proportionality constants Animation Play

The sources of light Animation Play

The spectrum for a greater number of slits Whiteboard exercise Play

The strength of electric field around a charged sphere Animation Play

The strength of electric field between two parallel plates Animation Play

The structure of a light bulb Illustration Play

The structure of an electroscope Animation Play

The sum of current in a node Animation Play

The summing of resistances Whiteboard exercise Play

The summing of resistances Student activity Play

The Sun as a form of energy Whiteboard exercise Play

The Sun as a source of energy Student activity Play

The timbre Animation Play

The timbre Whiteboard exercise Play

The timbre Student activity Play

The velocity of wave propagation Animation Play

The velocity of wave propagation Whiteboard exercise Play