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Rad Physics > Chapter 3 > Flashcards

Chapter 3 Flashcards

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1
Q

Are used in conjunction with a magnetic field resonance imaging (mri) to create images of the body

A

Radio waves

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2
Q

What two rays are used for imaging in radiology and nuclear medicine

A

Gamma and X-rays

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3
Q

What’s one difference between the ends of the spectrum

A

Only high energy radiation ( X-rays and gamma ray) has the ability to ionize matter

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4
Q

Who developed the electromagnetic theory

A

James maxwell

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5
Q

All ___________ _________ are very similar in that it has no mass, Carries energy in waves as electric and magnetic disturbance in space and travel at the speed of light

A

Electromagnetic radiation

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6
Q

Is a way of ordering or grouping the different electron magnetic radiation

A

Electromagnetic spectrum

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7
Q

All members of the electromagnetic spectrum have the same __________ and vary only in their energy. Wavelength, and frequency.

A

Velocity

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8
Q

List the electromagnetic spectrum from lowest to highest

A

Lowest: radiowaves, microwaves, infrared light, visible light, ultraviolet light, X-rays, and gammas rays

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9
Q

The wave length of the electromagnetic spectrum ranges from

A

10^ 6 to 10^ -16 meters

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10
Q

The frequency ranges from

A

10^2 to 10^24 hz

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11
Q

True or false electromagnetic energy can exist apart from Matter and travel through a vacuum

A

True

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12
Q

True or false mechanical energy requires an object or matter to act through

A

True

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13
Q

Example of mechanical energy

A

Sound

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14
Q

Electromagnetic formula: E= hf, what does each letter stands for

A

E - energy
H- Planck constant
F- frequency of photons

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15
Q

E=hf is measured in

A

Electricon Volts

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16
Q

the ENERGY of the electromagnetic spectrum ranges from

A

10^-12 to 10^ 10

17
Q

True or false. Electromagnetic radiation exhibits properties of a wave or particles depending on its energy and in some cases its environment also called wave- particle duality

A

True

18
Q

Electromagnetic radiation characteristics

A

Velocity, amplitude,wavelength, and frequency

19
Q

All The VELOCITY for electromagnetic are the same

A

3x10^8 m/s

20
Q

Refers to the maximum height of a wave

A

Amplitude

21
Q

Is measured of the distance from the peak of one wave to the peak of the next wave

A

Wavelength

22
Q

Refers to the number of waves that pass a given point per second

A

Frequency

23
Q

True or false electromagnetic radiation travels at the same velocity, the relationship between the wavelength and frequency is inverse

A

True

24
Q

True or false the longer the wavelength the lower the frequency

A

True

25
Q

Wavelength are express through

A

Meters

26
Q

Frequency is measured in

A

Hertz

27
Q

Formula for calculating wavelength or frequency are

A

Velocity= frequency x wavelength ( v= f/)

28
Q

True or false is replaced with C ( constant symbol for speed of light ) new formula is c= f/\

A

True

29
Q

When solving for frequency the formula is f= c/\ true or false

A

True

30
Q

When solving for wavelength the formula is

A

/\ = c/f

31
Q

High energy photon acts more like

A

Particles

32
Q

Lower energy radiation acts more like

A

Waves

33
Q

The intensity of electromagnetic radiation diminishes by a factor of the square of the distance from the source

A

Inverse square law

34
Q

Intensity Formula:I1 / i2 = (d2)^2 / (d1)^2 what does each of these letters stand for

A

I - luminosity
D- distance

Rad Physics (4 decks)

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