Sources of light Illustration Play

Spectral analysis Student activity Play

Spectroscope Animation Play

Spectrum of electromagnetic radiation Illustration Play

Spectrum of electromagnetic waves Whiteboard exercise Play

Spectrum of electromagnetic waves Illustration Play

Spectrum of hydrogen Whiteboard exercise Play

Spectrum of hydrogen Student activity Play

Speed of light in transparent materials Illustration Play

Spontaneous and stimulated emission Student activity Play

Spruces and pines Animation Play

Starch Slideshow Play

Statements about dispersion of light Whiteboard exercise Play

Statements about light Whiteboard exercise Play

Statements about refraction of light Whiteboard exercise Play

Statements about seeing Whiteboard exercise Play

Stefan-Boltzmann Law Simulation Play

Stefan–Boltzmann Law Student activity Play

Stimuli and receptors Student activity Play

Stimuli and receptors Whiteboard exercise Play

Storage substances and storage organs in plants Student activity Play

Storage substances in plants Slideshow Play

Storm Animation Play

Structure of arthropods Slideshow Play

Structure of the light microscope Animation Play