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LIGHT - Coggle Diagram
LIGHT
STUDYING REFLECTIONS
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LAWS OF REFLECTIONS
- The angle of incidence is always equal to the angle of reflection
- The incident ray, reflected ray, and the normal all lie in the same plane
- The angles of the rays are measured in relation to the normal
WORKS OF PEOPLE:
Thomas Young
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Believed that the crests= brightest, troughs=darkest
Philip von Lenard
Discovered that when light is shone onto certain metals, tiny electrically charge particles called electrons are released from the metal surface.
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Democritus
Believed that objects were made of atoms, some of which passed from the objects through the air to the eye and allowed us to see the objects.
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Luminous objects
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Example: sun, stars, flames
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PRISM
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Dispersion
When sun rays pass through a prism the light waves of different wavelengths travel at slightly different speeds and are spread out by a process called Dispersion.
TWO TYPES OF IMAGES
Virtual Image
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Plane, convex mirror and concave lens form a virtual image
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