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Environmental science page with info about the ozone layer and water and air pollution.
This applet models resonance and interference effects as waves pass through various layers. There are two modes: Electromagnetic, which models the transmission of light through multi-layer films, and ...
A thorough site covering all aspects of ozone depletion from the background science to the myths to images of the Antarctic hole.
Auger Electron Spectroscopy is a popular technique for determining the composition of the top few layers of a surface.
Short summary about what the atmosphere is made of and the different layers
This includes a simple "how-to" graphing example followed by other more sophisticated examples of graphing using NASA images and images from the Neumayer Antarctic Station.
Models for the charge buildup which leads to lightning discharges suggest a buildup of a strong negative charge layer near the bottom of the cloud and the formation of a positive ground shadow