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Atmosphere refraction makes the daylight hours a bit
longer
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Refraction causes the bottom of a swimming pool to appear
shallower than it actually is
-
The type of lens that spreads parallel light is a
diverging lens
-
Fermat's principle of least time applies to
both of these
-
A surface that is considered rough for infrared waves may be polished for
radio waves
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The law of reflection holds for
both of these
-
When light is refracted, there is a change in its
wavelength
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The image of the "infinite-far-away" sum produced by a converging lens appears
at the focal point
-
The reason diamonds display many colors is that
different colors of light undergo different changes of speed when traveling inside a diamond
-
The shortest plane mirror in which you can see your entire image is
half your height
-
A single raindrop illuminated by sunshine disperses
all the colors of the rainbow.
-
When you look at yourself in a pocket mirror, and then hold the mirror farther away, you see
the same amount of yourself
-
Different colors of light travel at different speeds in a transparent medium. In vacuum, different colors of light travel at
the same speed
-
When a light beam emerges from water into air, the average light speed
increases
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The incident light ray, the reflected light ray, and the normal between them
lie in the same plane
-
The bending of light as it refracts actually
shorten the time of travel
-
Object and image for a plane mirror lie
equal distances from the mirror
-
The refraction of light in a diamond is greater for
short-wavelength light
-
Star twinkle when seen from the Earth. When seen from the moon, stars
don't twinkle
-
If you wish to spear a fish with a regular spear, you should compensate for refraction between the air and water and throw your spear
below the sighted fish
-
In an optical fiber, light actually
travels in straight-line segments
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A "burning glass" used to concentrate sunlight in a tiny spot is a
converging lens
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