Spectrum

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entire  visible  infrared

 

 The Entire Electromagnetic Spectrum

Designation

Frequency Range

Wavelength Range

Lower

Upper

Lower

Upper

ULF

none

30 Hz

10 Mm

none

VF

30 Hz

300 Hz

1 Mm

10 Mm

ELF

300 Hz

3 kHz

100 km

1 Mm

VLF

3 kHz

30 kHz

10 km

100 km

LF

30 kHz

300 kHz

1 km

10 km

MF

300 kHz

3 MHz

100 m

1 km

HF

3 MHz

30 MHz

10 m

100 m

VHF

30 MHz

300 MHz

1 m

10m

UHF

300 MHz

3 GHz

10 cm

1 m

SHF

3 GHz

30 GHz

1 cm

10 cm

S

2.6

3.95

7.6

11.5

G

3.95

5.85

5.1

7.6

J

5.3

8.2

3.7

5.7

H

7.05

10.0

3.0

4.25

X

8.2

12.4

2.4

3.7

M

10.0

15.0

2.0

3.0

P

12.4

18.0

1.67

2.4

K

18.0

26.5

1.1

1.67

R

26.5

40.0

0.75

1.1

EHF

30 GHz

300 GHz

1 mm

1 cm

Submillimeter

300 GHz

3 THz

100 mm

1 mm

Infrared

3 THz

430 THz

700 nm

100 mm

Visible

430 THz

750 THz

400 nm

700 nm

Ultraviolet

750 THz

30 PHz

10 nm

400 nm

X Ray

30 PHz

3 EHz

100 pm

10 nm

Gamma Ray

3 EHz

none

none

100 pm

Source:  NRL Plasma Formulary

Notes: 

     The boundary between ULF and VF (voice frequencies) is variously defined.

     The SHF (microwave) band is further subdivided approximately as shown.

  

The Visible Spectrum

Color

Wavelength Range [nm]

 

lower

upper

Red

630

780

Orange

590

630

Yellow

560

590

Green

490

560

Blue

450

490

Violet

380

450

Source:  http://www.adobe.com/support/techguides/color/colortheory/light.html

 

The Infrared Spectrum

Band

Wavelength Range [mm]

 

lower

upper

NIR (near IR)

0.7

2.0

MIR (mid IR)

2.0

25

FIR (far IR)

25

1000

Source:  http://scienceworld.wolfram.com/chemistry/InfraredSpectroscopy.html