Electromagnetic spectrum Flashcards
1
Q
similarities of electromagnetic waves
A
- they can all travel through a vacuum
- they ALL travel at the same speed in a vacuum
- they are transverse waves
2
Q
uses of radio waves
A
- broadcasting ( radio and TV)
- MRI-magnetic resonance imaging
3
Q
uses of X rays and γ rays
A
- sterilisation
- medical imaging
- medical treatment
4
Q
uses of ultraviolet
A
- sterilisation
- sun tanning
- fluorescent lamps
5
Q
uses of visible light
A
- optical fibres
- photography
6
Q
uses of infrared
A
- night vision goggles+cameras
- remote controls
- cooking
7
Q
uses of microwaves
A
- radar
- telecommunications (mobile phones)
- cooking
8
Q
Wavelength range (m) of radio waves
A
> 10^6 to 10^-1
9
Q
Wavelength range (m) of micro waves
A
10^-1 to 10^-3
10
Q
Wavelength range of γ rays
A
10^-10 to 10^-16
11
Q
Wavelength range of visible light
A
7 × 10^-7 RED to 4 × 10^-7 VIOLET
12
Q
Wavelength range of X rays
A
10^-8 to 10^-13
13
Q
Wavelength range of ultraviolet
A
4 × 10^-7 to 10^-8
14
Q
Wavelength range of infrared
A
10^-3 to 7 × 10^-7
15
Q
Ultraviolet (UV-A, UV-B, UV-C)
A
- The Ultraviolet (UV) band of the EM spectrum is split into 3 subdivisions.
- Sun produces all 3
- Almost 99% of UV at sea level is UV-A
