- Sections
- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
- L. Geometrical Optics
- M. Wave Optics
- N. Spectra & Color
- O. Vision
- P. Modern Physics
L3-12. Optical Board - Ray Diagram - Concave Mirror
Purpose
To locate the image of a concave mirror by using the three principal rays.
Equipment
Optical board with parabolic concave mirror, half-silvered and full-silvered mirros on mount, convex lens.
Images
Description
This is a short focal length concave parabolic mirror which produces a small image close to the mirror for the setup photographed. The central ray passes through a half-silvered mirror which deflects half of the light to the tip of the object arrow. The upper mirror can be rotated to create any of the three principal rays. Keep the mirror reasonably close to the mirror to produce a larger image. The convex lens keeps the light ray narrow. ◙◙The object can be moved within the focal point of the mirror to produce an anlarged virtual image behind the mirror.
References
Samuel Derman, Ray Tracing with Spherical and Parabolic Reflectors, TPT 28, 590-593 (1990).
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See pagesl1. light sources & light rays
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See pagesl2. plane mirrors
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See pagesl3. curved mirrors
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See pagesl4. refraction
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See pagesl5. total internal reflection
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See pagesl6. lenses
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See pagesl7. optical instruments
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See pagesl1. light sources & light rays
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See pagesl2. plane mirrors
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See pagesl3. curved mirrors
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See pagesl4. refraction
-
See pagesl5. total internal reflection
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See pagesl6. lenses
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See pagesl7. optical instruments