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Mr.Vroom Light Vocab

Stack #116631

Light Vocab WordsLight Vocab defintions
Optics the study of light
optics the study of light
apparent magnitude brightness of a star as it appears on earth
absolute magnitude amount of light a start actually gives off
ambient light light that is all around us/you
photons the smallest energy packet of light (quanta) or other electromagnetic radiation of a given wave length that can exist
convex lenses with a curve that curves outward
concave lenses with a curve that curve inward
electromagnetic spectrum the range of wavelengths over which electromagnetic radiation extends
opaque not allowing any light to pass through
transparent allowing light of a certain wavelengths to pass through without significant scattering (light will pass through, you can see through)
translucent light passes through but you can't see clearly, example; stained glass or frosted glass
umbra the inner, dark region of a shadow. No portion of the light can be seen within the umbra
penumbra an area of a semi-shadow formed around the umbra that can be produced only by a diffuse or large light
shadow an area of darkness that forms behind an object when the object blocks a source of light
light year the distance light travels in one year
infrared wavelengths of invisible electromagnetic radiation that are slightly longer than those of visible red light
What is the speed of light? 299,792,458 meters per second
Created by: 60122
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