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Bushong Rad Physics > Electromagnetic Energy Ch 4 > Flashcards

Electromagnetic Energy Ch 4 Flashcards

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1
Q

The type of energy in x-rays, radio waves,

microwaves & visible light

A

Electromagnetic Energy

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2
Q

Properties of Electromagnetic Energy

A

Frequency, Wavelength, Velocity &

Amplitude

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3
Q

An uninterrupted ordered sequence

A

Energy Continuum

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4
Q

The smallest quantity of any type of

electromagnetic energy

A

Photon

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5
Q

A small bundle of energy

A

Quantum

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6
Q

An x-ray photon is a quantum of

A

electromagnetic energy

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7
Q

He showed that visible light has both

electric & magnetic properties

A

James Clerk Maxwell

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8
Q

The velocity of all electromagnetic radiation is

A

3 x 108 m/s

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9
Q

The interactions among different energies,

forces or masses

A

Field

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10
Q

It governs the interaction of different masses

A

Gravitational Field

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11
Q

It governs the interactions of electrostatic

charges

A

Electric Field

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12
Q

It governs the interaction of magnetic poles

A

Magnetic Field

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13
Q

The variation in the movement of photons in

electrical & magnetic fields

A

Sine Wave

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14
Q

The width of a waveform

A

Amplitude

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15
Q

It describes variations in electric &
magnetic fields as photon travels with
velocity

A

Sine Wave Model of Electromagnetic Energy

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16
Q

the number of wavelengths that
pass a p
oint of observation per second

A

Frequency

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17
Q

Three Wave Parameters

A

Velocity, Frequency & Wavelength

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18
Q

When is wavelength & frequency
inversely proportional

A

At a given velocity

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19
Q

A continuum of electromagnetic energy

A

Electromagnetic Spectrum

20
Q

The wave of moving molecules

A

Ultrasound

21
Q

Diagnostic ultrasound is not part of…

A

electromagnetic spectrum

22
Q

Measurement of the Electromagnetic Spectrum

A

energy (eV), frequency (Hz)

& wavelength (λ)

23
Q

It occupies the smallest segment of

electromagnetic spectrum

A

Visible Ligh

24
Q

The deviation of course that occurs when
photos of visible light traveling in straight
lines pass from one transparent medium to
another

A

Refraction

25
Q

It heats any substance on which it shines

A

Infarred

26
Q

Higher energy & lower wavelength

A

Ionizing Radiation

27
Q

It is emitted from the electron cloud

A

X-rays

28
Q

It comes from inside the nucleus of

radioactive atom

A

Gamma Rays

29
Q

only difference between x
-rays & gamma

rays is..

A

Their origin

30
Q

They behave more like waves

A

Visible Light Photons

31
Q

They behave more like particles

A

X-ray Photons

32
Q

The principle that states that both wave &
particle concepts must be retained, because
wave-like properties are exhibited in some
experiments & particle-like properties are
exhibited in other

A

Wave Particle duality

33
Q

All radiation with λ longer than x-rays

A

Wave Phenomenon

34
Q

Visible light behaves like a…

A

Wave

35
Q

Xrays behave like they have…

A

Paticles

36
Q

The structures that absorb x-rays

A

Radiopaque

37
Q

The structures that transmit x-rays

A

Radiolucent

38
Q

It states that the intensity of radiation at a
location is inversely proportional to the
square of distance from the source of
radiation

A

Inverse Square Law

39
Q

Formula if Inverse Square Law

A

I1/I2 = (D2/D1)2

40
Q

Electromagnetic energy (radiation) intensity is…

A

inversely related to the square of the distance

from the source

41
Q

discrete bundle of energy!

A

X-ray photon

42
Q

X-rays are created with the speed of light (c)

A

Planck’s Quantum Theory

43
Q

Synthesized our understanding of Electromagnetic radiation

A

Max Planck

44
Q

States that matter can neither be created nor destroyed

A

Law of Conservation of Matter

45
Q

States that energy may be transformed from one form to another but cannot be created or destroyed

A

Law of Conservation of Energy

Bushong Rad Physics (8 decks)

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