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29 Cards in this Set
- Front
- Back
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Sun |
Natural Source of Light |
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A Light Bulb |
An example of an artificial light source |
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Incandescent Light Source |
An object can be heated to such a high Temperature that it emits visible light. |
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Luminous |
All objects that emit light. |
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Phophorescence |
Persistent emission of light following exposure to and removal of a source of radiation. |
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Ray Model |
Used to predict where shadows will form. |
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Transparent |
Light passes through. |
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Translucent |
Some light passes through (Scattered) |
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Reflections |
Light strikes a surface and bounces back |
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Normal Line |
Used to measure the angle of incidence and angle of reflection (Its Perpendicular) |
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Law of Relfection |
The angle of incidence equals the angle of reflection |
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Concave |
A type of mirror that curves in |
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Virtual Image |
When a mirror cannot focus an image on a screen but you can see an image when you look in the mirror. |
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Rough Surface |
Reflects light randomly |
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Refraction |
The Bending of light when it travels from one medium to another. |
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Mirage |
The refraction of light through air which may cause the creation of an image |
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Angle of Refraction |
When light moves from air into water it will bend toward the normal, when light exits a denser mediu, it bends away from the normal |
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Absorption |
Light changes into some other kind of energy |
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Double Concave Lens |
Causes rays of light to spread out |
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Double Convex Lens |
Causes rays of light to converge or come together. |
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Nearsighted |
Have Eyes that are too long |
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Farsighted |
Have eyes that are too short |
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Nearsighted People |
Trouble seeing object far away |
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Farsighted People |
Trouble seeing an object that is close |
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Accommodation |
Changing the shape of the lens to adjust for different object distances |
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Near Point |
Shortest distance at which an object is in focus |
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Pupil |
Dark center in the human eye |
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Iris |
The colored ring in a human eye |
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Blind spot |
Where the optic nerve enters the retina does not have any light-sensing cells
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