MED RAD QUIZ 3 Flashcards by Becca Downs | Brainscape

Q

4 radiation types

A

EMR, gravitational, particulate, acoustic

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Q

Charges have a _______ field around them

A

Electric

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Q

Moving charges create a ________ field

A

Magnetic

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Q

Disturbances in a charge create

A

Electromagnetic waves

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Q

Radiation is transmission of energy through what?

A

Waves and particles

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Q

EMR is both what? for dual nature

A

Both waves and particles

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Q

Define amplitude

A

Max field strength

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Q

Higher the amplitude?

A

Higher the intensity

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Q

Define wavelength

A

distance between SAME points

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Q

shorter wavelength =

A

higher intensity

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Q

Define frequency

A

of cycles PER second

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Q

Higher frequency =

A

higher intensity

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Q

Define period

A

How long each cycle TAKES

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Q

formula for waves and c

A

C = freq / wavelength

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Q

Blue vs Green on EMR spectrum

A

Blue - higher E, Shorter Wave, higher freq
Green - lower energy, longer wave, lower freq

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Q

Colour order of spectrum

A

PBGYOR (purple, blue, green, yellow, orange, red)

Q

Wave interaction: reflection

A

bounces off surface

Q

Wave interaction: refraction

A

changes direction from speed

Q

Wave interaction: diffraction

A

Wave bends, creates pattern

Q

Wave interaction: interference

A

Waves add together or cancel

Q

Interference: constructive

A

waves “build” up - add up

Q

Interference: destructive

A

“destruct” - cancel out

Q

Xrays diffract? yes or no

A

Yes

Q

quantum of light

A

photon

Q

define quantum

A

smallest unit of something

Q

Does energy of EMR have weight?

A

no

Q

How does quantum relate to xray radiation

A

Xrays consist of photons