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Optics

Vocabulary

TermDefinition
Lens refracts incoming light rays
Mirror reflects incoming light rays
Reflection when light waves bounce off of a barrier/boundary between two different mediums
Image where light rays converge, or appear to converge, to produce a "copy" of the original object
Focal Length distance between the center of the lens or mirror and the focal point (f)
Focal Point location through which light rays converge
Thin Lens Equation (1/f) = (1/do) + (1/di)
Ray Diagram used to determine where an image will form
Upright vertical image
Inverted upside down image
Reduced smaller image
Enlarged larger, magnified image
Real Image when light rays converge to produce an inverted image that can be projected on to a screen
Virtual Image when light rays appear to converge to produce an upright image that can not be projected on to a screen
Refraction bending of a light wave as it enters a new medium at an angle; due to a change in velocity
Convex Lens converging lens (thicker in the middle) that bends light rays inwards towards the far focal point
Magnification size of an image relative to the size of the object creating it
Magnification Equation image distance divided by object distance (m = di/do)
Concave Lens diverging lens (thinner in the middle) that bends light rays away from the far focal point
Object source of the light rays from which an image could form
Plane Mirror flat mirror
Object Distance how far an object is from the center of a lens or mirror (do)
Image Distance how far an image is from the center of a lens or mirror (di)
Object Height how tall an object is (ho)
Image Height how tall an image is (hi)
Magnitude size or amount (number)
Created by: john_bailey720
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