Electromagnetic Spectrum Flashcards
1
Q
Order the EM spectrum
A
Radio waves Microwaves Infrared Visible Ultraviolet X-ray Gamma ray
2
Q
Wave speed=
A
Frequency times wavelength
All wave speeds are 30000 m/s
3
Q
Wavelength, frequency, energy changes
A
Longer wavelength
Lower frequency and energy
4
Q
Radiowave and gamma ray wavelength
A
10000m
10 to the -15
5
Q
Radio wave uses
A
TV, radio
6
Q
Microwaves
A
Satellite comms, cooking food, phones, wi-fi
7
Q
Infrared uses
A
Electric heaters, cooking food, infrared cameras
8
Q
Visible uses
A
Fibre optic communications, camera
9
Q
UV uses
A
Energy efficient lamps, sun tanning, security cameras
10
Q
X-ray uses
A
Medical imaging, airport security
11
Q
Gamma ray uses
A
Medical treatment, sterilisation of equipment
12
Q
How are they produced?
A
Electric field at right angles to AC magnetic field
