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Physics (The E/M Spectrum :explode: (Microwaves :star: (100 - 10 mm 10 -…
Physics
The E/M Spectrum :explode:
Microwaves :star:
100 - 10 mm
10 - 1 mm
Produced by klystron or magneton tubes or solid state diodes
3 - 300 GHz
30 - 300 GHz
Used for domestic ovens, RADAR, satellite and terrestrial communication links
Infra-Red :star:
1 mm - 10 micrometres
10 - 2.5 micrometres
2500 - 740 nm
Produced by light emitting diode or laser
300 GHz - 30 THz
30 - 120 THz
120 - 400 THz
Used for night vision cameras, optical fibre comms, movement detectors and remote controls
Radio :star:
30 - 300 kHz
300 kHz - 30 MHz
3 - 30 MHz
30 - 300 MHz
300 MHz - 3GHz
10 - 1 km
1 km - 100m
100 - 10m
10 - 1m
1m - 100mm
They are produced by electronic oscillators coupled to broadcast antennas. astronomical radio sources for example neuron stars
Used for radio and TV broadcasting, mobile phones, plasma heating for fusion reactors and industrial ovens
Visible light :star:
400 - 800 THz
740 - 370 nm
Produced by emissions by outer electron transitions
Used for illumination, signalling and imaging
Ultra-Violet :star:
800 THz - 30 Phz
370 - 10 nm
Produced by emissions by outer electron transitions
Used for insect vision and tanning
X-Rays :star:
0.01 to 10 nm
They are produced by inner electron excitation and decay
30 PHz - 30 EHz, frequency
Waves :explode: