The optical fibers are illuminated with infra-red radiation from diode lasers (127, 129).

Between the mobile terminal (MS) and the service terminal (T), 1 to 1 local communication is performed by infrared radiation.

The present invention comprises a system and method for detecting multiple wavelength bands of infrared radiation.

Which has a higher frequency: infrared radiation or visible light?

Which has a longer wavelength - visible or infrared radiation?

The ceramic particles reflect body heat, returning it as infrared radiation.

Remote light emitting diodes generate the infrared radiation which is coupled to the photodiode array via optical fiber elements.

Transparent glass windows (88) comprising thereon titanium silicide (TiSi2) (82) as the principal solar screening layer for reducing transmission of near infrared and visible radiation.

All of the following compounds absorb infrared radiation between 1600 and 1800 cm1.

All objects with a temperature above absolute zero emits an infrared radiation.

These frequencies correspond to radiation in the infrared (IR) region of the electromagnetic spectrum.

Any object with a temperature above absolute zero emits infrared radiation.

The sound track (22) preferably modulates visible radiation while the silicon photoreceptor (80) incorporated in the sound-reproduction apparatus preferentially responds to infrared radiation.

The FIR far infrared radiation ”Far Infrared Ray” i.e. Deep Heat is Energy, which is transformed to heat when it reaches the human body.

Herschel had discovered infrared radiation, and realised that the Sun was emitting a great deal of it.