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RAD 156 EM Energy

RAD EM ENERGY

QuestionAnswer
Who showed that visible light has both electric and magnetic properties James Clerk Maxwell
What are the Properties of EM Energy Velocity, Wavelength, Frequency, Amplitude
Velocity (c) Speed of light (constant)
Wavelength Distance between successive points on a wave
Frequency (f) Number of wavelengths: rate of rise and fall
Amplitude ½ range from crest to valley
What 2 properties are inversely proportional Wavelength & frequency
smallest quantity of electromagnetic energy Photon
X-ray & light photons are considered types of photon _______ radiation
The three (3) scales are used to identified the energies represented/described on the spectrum Energy/Frequency/Wavelength
Which energies are capable of ionizing/exciting an atom X-ray; gamma, ultraviolet
Visible Light is Identified by Wavelength
Which Light: Heats substances; radiant heat from sunlight or fire Infrared Light
Which Light: Bumblebees can see; causes sunburns; wood-lamp for eyes; sanitary concerns Ultraviolet Light
Which Light: Radio and Television; Importance to radiology: MR imaging in the upper RF range RF Light ( Identified by Frequency)
Ionizing Radiation is Identified by Energy
This explains how x-rays act as waves and a particles Wave - Particle Duality
X-rays travel along a straight path in the form a Sine Wave
f = frequency measured in Hertz (Hz)
f = c/λ frequency = Speed of light / wavelength Wave equation
This theory e plains how x-ray photons behave as particles when interacting with matter Particle Theory
The -father of quantum physics; described the relationship between photon energy and photon frequency Max Planck
E = hf photon ENERGY = (h) Planck's constant X photon FREQUENCY Planck's Quantum equation
T or F: X-Rays are visible False
T or F: X-Rays are electrically neutral - no charge; cannot change direction or accelerated True
T or F: X-Rays travel at the speed of light in a vacuum True
T or F: X-Rays have Polyenergetic/heterogenic beam True
T or F: X-Rays only tgravel in straight lines; divergent beam True
T or F: X-Rays Produce secondary radiation - interact with the nucleus False - interact with inner-shell electrons
Created by: drocco25
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