Science 8J Light topic key words.
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opaque |
I cannot see through the door because it is opaque.
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ray |
When a light ray hits an object and reflects off.
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reflect |
The light will reflect from the white walls.
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shadow |
An area behind an object where there is no light, castes a shadow.
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translucent |
Translucent material lets some light pass through it but not all of it.
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transmit |
Light can transmit through transparent materials.
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transparent |
A material like glass which allows light to pass through it without shattering is transparent.
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transverse |
Amplitude is the height of a wave crest or a wave trough of a transverse wave from the rest position.
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vacuum |
A completely open space, containing no particles, is a vacuum.
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incidence |
Angle between the ray of incidence and the normal line.
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reflection |
A copy of an object that is seen in a mirror is a reflection.
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normal |
The normal is an imaginary line at right angles to the surface of a mirror or other object where a ray of light hits it.
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plane |
A plane, smooth, flat mirror.
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diffuse |
Light rays diffuse in all directions from a rough surface.
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specular |
Light rays reflect evenly from from a smooth surface. Mirrors produce specular reflection.
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refraction |
Refraction is the change in direction when light goes from one transparent material to another.
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lens |
This camera has got a long lens for taking photos of things from a long way away.
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cornea |
The cornea is a transparent part of the eye which covers the iris and pupil.
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dispersion |
Dispersion happens when light separates into the spectrum, as it passes through a prism.
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spectrum |
The seven colours which make up white light are the spectrum.
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* This sentence was added by a Spellzone user.
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