P13 Electromagnetic Waves Flashcards
1
Q
order of EM spectrum
(+ wavelength, freq, energy)
A
radio have highest wavelength
gamma have highest frequency
gamma have the highest energy
RMIVUXG
2
Q
speed of e.m. waves
A
all the same - 300M m/s (3 10^8)
3
Q
light
A
4
Q
infrared (radiation and devices)
A
5
Q
radio waves
A
+ reflect off ionosphere
6
Q
microwaves
A
7
Q
optical fibres (X)
A
8
Q
radio wavelengths
A
9
Q
carrier waves (X)
A
10
Q
UV rays
A
11
Q
X rays and gamma rays similarities and differences
A
12
Q
using gamma rays
A
13
Q
safety concerns with x rays and gamma rays
A
14
Q
e.m. in general
A
all transverse, dont require particles to propagate
15
Q
x-rays in medicine
A
16
Q
radiation dose
A
measure of the damage done to a persons body by ionising radiaiton
depends on:
type of radiation
length of exposure
energy abosrbed by body per second
17
Q
x-ray therapy
A
