Damages Whiteboard exercise Play

Defectoscopy and the measurement of thickness Student activity Play

Definition of antisepsis Student activity Play

Density of gases Animation Play

Depletion of the ozone layer Slideshow Play

Detecting the presence of chlorine in haloalkanes Animation Play

Determination of enthalpy change in combustion reactions (1) Student activity Play

Determining the water content of a sample of soil Animation Play

Different types of energy Animation Play

Different types of insulation Slideshow Play

Diffraction Student activity Play

Diffraction Chart Play

Discovery of elementary particles Student activity Play

Dissipation of heat Animation Play

Division of electromagnetic waves Chart Play

Division of electromagnetic waves Chart Play

Division of electromagnetic waves Chart Play

Division of UV radiation Illustration Play

Dosimeters Slideshow Play

Drawing circuits Student activity Play

Earth's atmosphere Animation Play

Ecosystem Class activity Play

Ecosystem Whiteboard presentation Play

Ecosystem = biocenosis + biotope Student activity Play

Effects of radiation Chart Play