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Physics > 1139 Definitions > Flashcards

1139 Definitions Flashcards

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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

A

.

19
Q

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

A

.

20
Q

remember to study convex lens with object beyond near focus

A

.

21
Q

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

A

Alhazen

22
Q

regulates the amount of light reaching the film

A

diaphragm

23
Q

controls how long light strikes the photographic emulsion

A

shutter

24
Q

first used a compound microscope in studying science

A

Robert Hooke

25
Q

eliminated chromatic aberration by constructing a refracting telescope with a focal length of 6 meters

A

Christian Huygens

26
Q

eliminated chromatic aberration in lenses by combining two lenses of differing properties

A

John Dollond

27
Q

designed the first reflecting telescope

A

Isaac Newton

28
Q

the kind of mirror used to correct spherical aberration

A

parabolic

29
Q

invented the first telescope

A

Hans Lippershey

30
Q

the ability of a telescope to render visible two objects that are close together

A

resolution

31
Q

improved Galilei’s telescope by using a convex eye lens

A

Johannes Kepler

32
Q

focal length/aperture

A

.

33
Q

lower f number =

A

brighter

34
Q

reflects all light

A

reflective surface

Physics (22 decks)

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