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40 Cards in this Set
- Front
- Back
What assumes light travels in straight-line paths?
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Ray Model of Light
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Straight-line path is called?
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Light Rays
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Ray model concentrates on light _______.
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behavior
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Occurs when a light ray hits a smooth surface.
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Regular Reflection
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Occurs when a light ray hits a rough surface.
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Diffuse Reflection
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Image is right side up & reversed. Flat surface. Virtual
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Plane Mirror
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Has a focal pt. and focal length. Image can be bigger, smaller, or same size. Upside down.
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Concave Mirror
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Image is rt. side up, farther away, and smaller. Bends out.
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Convex Mirror
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the changing of light speed causing a bend.
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Refraction
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Every medium has a specific ____ __ ______.
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index of refraction
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ex. of refraction of light by the atmosphere.
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Mirages
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Is separating into diff. colors by the _______ and ______ of each colors wavelength due to refraction.
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white light
bending & separating |
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Any transparent material that refracts light
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lens
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Thicker in the middle, light is bent towards center
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Convex lens
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Where the rays converge.
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Focal Pt.
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The distance where the rays converge.
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Focal length
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thicker at ends, light rays are bent outward, rays diverge.
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Concave lens
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When light strikes any form of matter is can be:
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reflected, absorbed, or transmitted
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light is transmitted throught the substance
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transparent
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scatters light
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translucent
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doesn't transmit light, it reflects or absorbs it
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opaque
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Depends on what frequencies are absorbed and reflected
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Color of objects
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Primary colors of light:
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red, blue, and green
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Primary colors of Pigments:
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yellow, cyan, and magenta
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Waves vibrate in a single direction
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Polarized light
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Blocks glare by allowing the light waves vibrating in the desired direction to pass through. All other waves are reflected or absorbed.
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Polarized Filter
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reduce glare by blocking out certain colors of light
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Color filter
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Produce images through reflection and refraction
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Optical instruments
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Make a permanent record of an image
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Cameras
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Light picture
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photograph
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Controls the amount of light
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apature
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What type of lens does a camera use?
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convex lens
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Magnifies the very distant
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telescope
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Telescope was popularized by:
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Galileo
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Telescope was invented by
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Hans Lipperschey
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_______ Telescope is limited in size and uses 2 convex lenses
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Refracting
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________ Telescope uses mirrors
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Reflecting
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Uses 2 convex lenses and magnifies the very small
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microscope
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Part of microscope lens near the eye:
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ocular lens
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Par the microscope lens near the opject:
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objective lens
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