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after the stars

luminosity also know as absolute brightness. The brightness of the star IF it were 33 light years (10 parsecs) away.
apparent magnitude also know as brightness. How bright a star is seen from Earth.
Electromagnetic Wave consist of an electric field and a magnetic field carrying energy.
Light an electromagnetic wave.
Hertz the unit for the number of vibrations that pass per second.
white light All visible light colors combined.
Darkness the absence of light.
Sunlight Consists of multiple frequencies of radiation, Infrared, Visible and Ultraviolet.
Created by: MsKovalcik