1139 Definitions Flashcards

1
Q

reflection of light rays in all directions

A

diffuse reflection

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2
Q

treats light as rays traveling in straight lines

A

geometric optics

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3
Q

best reflector of light

A

silver

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4
Q

percentage of light reflected by a surface

A

albedo

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5
Q

transmits all light

A

transparent surface

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6
Q

science of light and vision

A

optics

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7
Q

absorbs all light

A

black surface

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8
Q

extended motion of light rays in a straight line

A

rectilinear propagation

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9
Q

form of radiant energy created by God

A

light

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10
Q

the angle of incidence = the angle of reflection

A

the law of reflection

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11
Q

the separation of light into its component colors

A

dispersion

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12
Q

angle at which light is refracted at an angle of 90 degrees

A

critical angle

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13
Q

compound lens

A

a lens made up of several individual lens elements

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14
Q

ray diagram

A

a scale drawing showing the path of light through a lens or from a mirror

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15
Q

reverses image left to right; forms virtual images

A

plane mirror

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16
Q

converges parallel light rays; forms real images

A

convex lens and concave mirror

17
Q

diverges parallel light rays; forms virtual images

A

concave lens and convex mirror

18
Q

image/real

19
Q

1/focal length = 1/distance from object + 1/distance from image

20
Q

remember to study convex lens with object beyond near focus

21
Q

replaced the pinhole with a convex lens, letting in more light and producing a brighter image

22
Q

regulates the amount of light reaching the film

23
Q

controls how long light strikes the photographic emulsion

24
Q

first used a compound microscope in studying science

A

Robert Hooke

25
eliminated chromatic aberration by constructing a refracting telescope with a focal length of 6 meters
Christian Huygens
26
eliminated chromatic aberration in lenses by combining two lenses of differing properties
John Dollond
27
designed the first reflecting telescope
Isaac Newton
28
the kind of mirror used to correct spherical aberration
parabolic
29
invented the first telescope
Hans Lippershey
30
the ability of a telescope to render visible two objects that are close together
resolution
31
improved Galilei's telescope by using a convex eye lens
Johannes Kepler
32
focal length/aperture
.
33
lower f number =
brighter
34
reflects all light
reflective surface