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Reflection and Refraction
Terms in this set (61)
The law of reflection says that?
The angle of reflection from a mirror equals the angle of incident
The reason we can read print from any direction is that?
The white part of a page reflects light in all directions
Diffuse reflection occurs when the size of surface irregularities is?
Larger compared to the wavelength of the light used
Refraction is the result of?
Different wave speeds
You can hear noises a long distance away over water at night because?
Of refraction of sound in air
A penny lies in the bottom of a tear cup filled with water. As you can look down on the penny, compared to its actual depth, it looks?
When you see a "wet spot" mirage on the road in front of you, you are most likely seeing?
A beam of light emerges from water into air at an angle. The beam is bent?
Away from the normal
The effect that we call a mirage has most to do with?
Different colors of light travel at different speeds in a transparent medium. In a vacuum, different colors of light travel at?
The same speed
The spectrum produced by a prism or a raindrop is evidence that the average speed of light in the material depends on the light's?
The shortest plane mirror in which you can see your entire image?
Is half your height
A beam of light travels fastes in?
Stars twinkle when seen from the earth at night. When seen from the moon, stars?
A rainbow nicely illustrates an example of light?
Refraction, internal reflection.
A secondary rainbow is dimmer than a primary rainbow because?
There is an extra reflection inside the water drops
Ninety percent of light incident on a certain pieces of glass passes through it. How much light passes through two pieces of this glass?
The law of reflection says that all light reaching a boundary between two surfaces is reflected.
When you look at the image of a candle in a mirror, you see a real image.
Diffuse reflection occurs when light is reflected in many directions from a rough surface.
Reflection occurs when one part of a wave travels more slowly than another part.
Mirages occurs because of the reflection of light on a hot day.
The separation of light into colors arranged according to their frequency is dispersion.
The critical angle is the angle at which all light is refracted out of a substance.
Total internal reflection occurs when a light Ray hits a surface at an angle greater than the critical angle.
When a wave reaches a boundary between two media, in most cases some of the wave is reflected and some is refracted.
A line perpendicular to a surface is called a normal line.
A line that represents the positron of a wave crest is called a wave front.
Sometimes a dry hot road will appear to be wet because of atmospheric refraction.
When you shine a waterproof light from underwear toward the surface of the water, there is a certain angle at which no light is refracted above the water and all the light is reflected back.
The study of how lights behaves
Produced by a lens or mirror
What you are actually looking at
A lens or mirror that is bigger at the ends
A lens or mirror that is bigger in the middle
Light rays that come together
Light rays that spread apart
A line drawn perpendicular to the surface of a mirror or lens
An optical device that works by reflection
Angle of incidence
From the normal to the ingoing ray
Angle of reflection
From the normal to the outgoing Ray
An optical device uses refraction to bend light
Where all parallel rays converge
Can produce a real image?
Concave lens? No
Convex mirror? No
Concave mirror? Yes
Convex lens? Yes
Real or Virtual focal point?
Concave lens? Virtual focus
Concave mirror? Real
Convex mirror? Virtual focus
Convex lens? Real
Convergent or divergent?
Concave lens? Divergent
Concave mirror? Convergent
Convex mirror? Divergent
Convex lens? Convergent
Total internal reflection
When all light cannot escape glass or another medium and stays inside
The angle past which light cannot escape
Technology based on bending light in cables
Light created from high heat
Efficient light from UV radiation
The part of the light bulb that glows when hot and makes incandescent light
The act of only allowing one directional light to pass through a "filter"
An object that screens out all but light in one direction
Objects that give off light slowly and to "glow in the dark"
Light amplification by stimulated emissions of radiation
A convex lens is convergent and magnifies.
A covex mirror is divergent and reduces.
A concave lens if divergent and reduces.
A concave mirror is convergent and magnifies.
What has more energy: radio waves or visible light?
What has a shorter wavelength: ultraviolet or gamma rays?
What has a higher frequency: visible light or infrared?
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