Light   A form of electromagnetic radiation. Visible light is that associated with stimulating the organs of sight, which for normal human vision ranges in wavelength from 3900 to 7700 ångstroms.

Used in the following modules: Atomic Theory II, Cells, Charles Darwin I, Chemical Equations, Chemical Reactions, Data: Using Graphs and Visual Data, DNA I, Educational Web Design, Energy, Genetics I, Gravity, Light I, Light II, Matter: States of Matter, Minerals II, Minerals III, Nuclear Chemistry, Research Methods: Comparison, Research Methods: Experimentation, Research Methods: Modeling, Research Methods: The Practice of Science, Scientific Communication: Peer Review, Scientific Communication: Understanding Scientific Journals and Articles, The Carbon Cycle, Wave Mathematics