VS - Lighting Systems - Lighting - 998542

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The lighting system: what is light?

Light is one of the many electromagnetic radiations that are surrounding us.

From X-rays to submarine communication systems all radiation sources are defined by their wavelength in meters.

As the wavelength field is very large, several subunits are used depending on the emission type.

Visible light is composed of a range of wavelengths from 380 nm “blue light” to 750 nm “red light” (nm for Nano Meter).

VISIBLE LIGHT

X rays

UV’s

IR’s

GSM

Radio FM

Radio AM

Submarine radio

Wavelength

1 nm

250 nm 380 nm 750 nm 1 cm 20 cm

3 m

350 m

50 km

WAVELENGTH

1 nm = 0.000 000 001 meter

400

450 500 550 600 650 700 750

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