A curve intersecting itself Animation Play

A cycloid Animation Play

A cylindrical capacitor Simulation Play

A cylindrical capacitor Animation Play

A cylindrical capacitor Whiteboard exercise Play

A cylindrical capacitor Student activity Play

A DC engine Student activity Play

A DC engine Slideshow Play

A DC engine Whiteboard exercise Play

A diagram of the glucose conversions in the liver Illustration Play

A diagram of the operation of a gas turbine engine Animation Play

A diatomic chlorine molecule Animation Play

A different form of the equation of the circle Animation Play

A differential equation with separable variables Animation Play

A diode acting as a rectifier Whiteboard exercise Play

A diode acting as a rectifier Student activity Play

A diode acting as a rectifier Simulation Play

A disc containing n lattice points Animation Play

A disc in the coordinate system Animation Play

A double bond in ethene Animation Play

A family of transition metals Animation Play

A figure surrounded by straight lines Whiteboard exercise Play

A figure surrounded by straight lines Student activity Play

A filamentous green alga – Spirogyra Illustration Play

A film played backwards Animation Play