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Physiological Optics > Theories Of Light > Flashcards

Theories Of Light Flashcards

1
Q

Who proposed the wave theory of light?

A

Thomas Young

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2
Q

What is the speed of light in a vacuum?

A

299,792,458 meters per second

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3
Q

True or false: Light behaves both as a wave and a particle.

A

True

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4
Q

What is the phenomenon where light bends when passing through different mediums?

A

Refraction

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5
Q

What is the unit of luminous flux?

A

Lumen

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6
Q

Who proposed the particle theory of light?

A

Isaac Newton

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7
Q

What is the process by which light is absorbed and re-emitted in all directions?

A

Scattering

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8
Q

What is the bending of light around an obstacle called?

A

Diffraction

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9
Q

What is the color of light with the longest wavelength?

A

Red

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10
Q

What is the color of light with the shortest wavelength?

A

Violet

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11
Q

What is the law that states the angle of incidence is equal to the angle of reflection?

A

Law of reflection

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12
Q

Who proposed the corpuscular theory of light?

A

Christiaan Huygens

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13
Q

What is the bending of light waves around small obstacles called?

A

Huygens-Fresnel principle

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14
Q

What is the bending of light waves around sharp edges called?

A

Diffraction

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15
Q

What is the process by which light is absorbed and re-emitted in a single direction?

A

Reflection

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16
Q

What is the unit of illuminance?

A

Lux

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17
Q

True or false: Light always travels in a straight line.

A

False

18
Q

What is the process by which light changes speed when passing through different mediums?

A

Refraction

19
Q

What is the color of light with the highest frequency?

A

Violet

20
Q

What is the color of light with the lowest frequency?

A

Red

21
Q

What is the law that states the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for a given wavelength?

A

Snell’s Law

22
Q

Who proposed the wave-particle duality of light?

A

Albert Einstein

23
Q

What is the phenomenon where light changes direction when passing through different mediums?

A

Refraction

24
Q

What is the unit of luminance?

A

Candela per square meter

25
Q

Who proposed the electromagnetic theory of light?

A

James Clerk Maxwell

26
Q

What is the process by which light is absorbed and re-emitted in a specific direction?

A

Reflection

27
Q

What is the unit of luminous intensity?

A

Candela

28
Q

True or false: Light can exhibit interference patterns.

A

True

29
Q

What is the phenomenon where light waves overlap and either reinforce or cancel each other out?

A

Interference

30
Q

What is the bending of light waves around sharp edges or corners called?

A

Diffraction

31
Q

What is the color of light with the highest energy?

A

Violet

32
Q

What is the color of light with the lowest energy?

A

Red

33
Q

What is the law that states the total energy of an isolated system remains constant over time?

A

Conservation of energy

34
Q

Who proposed the quantum theory of light?

A

Max Planck

35
Q

What is the phenomenon where light changes speed and direction when passing through different mediums?

A

Refraction

36
Q

What is the unit of luminous efficacy?

A

Lumen per watt

37
Q

Who proposed the wave nature of light?

A

Augustin-Jean Fresnel

38
Q

What is the process by which light is absorbed and re-emitted in a random direction?

A

Scattering

39
Q

What is the unit of luminous energy?

A

Lumen-second

40
Q

True or false: Light can exhibit both wave-like and particle-like behaviors simultaneously.

A

True

41
Q

What is the phenomenon where light waves bend around corners and edges?

A

Diffraction

42
Q

What is the bending of light waves around sharp edges or corners called?

A

Huygens-Fresnel principle

Physiological Optics (2 decks)

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