Diffraction of light Student activity Play

Diffraction of light Animation Play

Diffraction of light Whiteboard exercise Play

Disinfection properties of halogens Slideshow Play

Dispersion forces in halogens Animation Play

Dispersion of light Student activity Play

Dispersion of light from a diffraction grating Animation Play

Dispersion of light from a diffraction grating Student activity Play

Dispersion of light from a diffraction grating Whiteboard exercise Play

Displacement of a halogen by another halogen Animation Play

Displacement reactions among the halogens Animation Play

Displacement reactions among the halogens Student activity Play

Display devices Simulation Play

Display devices Whiteboard exercise Play

Display devices Student activity Play

Distance covered by light Animation Play

Division of electromagnetic waves Chart Play

Doppler effect for different waves Student activity Play

During a thunderstorm Student activity Play

Eclipses Student activity Play

Ecosystem = biocenosis + biotope Student activity Play

Effect of gravitation on a beam of light Student activity Play

Effect of light on the growth of food plants Slideshow Play

Effects of physical factors on the rate of photosynthesis Slideshow Play

Effects of the Sun on the Earth Whiteboard exercise Play