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19 Cards in this Set
- Front
- Back
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Particle model of light
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A model that represents light as a stream of fast moving tiny particles that travel in a straight line to the eye, where they are absorbed to form a image
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Ray model of light
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A model that represents light as a straight line, or ray, indication the path of a beam of light
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Transparent
Translucent Opaque |
Transparent: Allows all light to pass through, only a small amount of light is absorbed
Translucent: Light rays pass through in all different direction Opaque: Prevents any light from passing through |
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Incident ray
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Incoming ray
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Reflecting ray
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Ray that bounces of the barrier
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Normal
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A dotted line that is drawn at right angles
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Angle of incidence
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Angle formed by the incident beam and the normal
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Angle of reflection
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Angle formed by reflecting beam and the normal
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Law of reflection
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"Angle of reflection equals angle of incidence"
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Angle of refraction
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Angle of a ray of light emerging from the boundary between two materials
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Plane mirror
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Flat, smooth mirror
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Concave mirrors
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Curves inward, reflect light rays to form images
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Focal point
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Point at where converging light rays meet from where light rays converge
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Converging
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Light rays that come together at the focal point
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Convex mirrors
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Mirror that curves outwards
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Lens
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Curved piece of transparent material that refracts light that converges or diverges parallel light rays
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Concave lenses
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Thinner in the middle than on the edge, light rays that pass through concave lenses diverge
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Convex lenses
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Thicker in the middle than on the edge, when light rays pass through convex lenses they converge
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Focal length
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The distance from the lens of mirror to the focal point
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