Definition of visible light and what incandescence, luminescence and illumination are and how they occur.
Learn about undersea creatures that produce light by bioluminescence.
Reviews the definition and importance of visible light, ways visible light is produced (incandescence and luminescence), and the meaning of illumination.
Find out the chemical reactions that cause glow sticks to give off light, and learn some real-world applications of glow sticks.
Describes the concept of fluorescence, bioluminescence, and phosphorescence in further detail.