Atmosphere Earth's atmosphere, for instance, consists of 6 layers, from the ground out to outer space - troposphere, stratosphere, mesosphere, thermosphere, ionosphere, and exosphere - all with different qualities.
A plasma display panel contains many tiny cells between two panels of glass which hold a mixture of noble gases. The gas in the cells is electrically turned into a plasma which emits ultraviolet light which then excites what to emit visible light?
