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| The reflection of light from a rough surface in which the incident light rays are reflected from the surface at many different angles.; In diffuse reflection, light reflects in many directions. In specular reflection, the light mostly emerges in one direction |
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| CONES = COLOR Rods are not good for color vision. In a dim room, however, we use mainly our rods, but we are "color blind." The rods are most sensitive to light and dark changes, shape and movement and contain only one type of light-sensitive pigment. The cones are not as sensitive to light as the rods; cones only work in bright light; responsible for color. |
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| Correct! The eye is sensitive to the range from about 400 nm (400 x 10-9 m, or 4 x 10-7 m) to 700 nm. The only answer that falls in this range is 5 x 10-7 |
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| Most common measurement of distance for the wavelengths of light. A nanometer is equal to one billionth (10 to the ninth) of a meter. |
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| In specular reflection, light hitting the object from one direction is all reflected in another direction. A mirror reflects this way, as does any glossy surface. The still surface of a pond can give a specular reflection. (as opposed to diffuse) |
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| Reflection off of smooth surfaces such as mirrors or a calm body of water leads to a type of reflection known as specular reflection. Reflection off of rough surfaces such as clothing, paper, and the asphalt roadway leads to a type of reflection known as diffuse reflection. |
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| An object can reflect in both a specular and diffuse way at once. |
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| Our view of an object is along a line of sight. The line of sight is the straight line from our eye (or eyes) to the object. Actually, we don’t see a single ray, but a bundle of rays forming a thin cone. The pupil in the eye can capture a small bundle of light rays emanating from a glowing object in slightly different directions. |
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