far infrared , FIR (abbreviation)

Far infrared is detected electronically rather than by using film.

The observational program for this experiment in the far infrared had only just begun.

There were also several spectrometers, operating from the short ultraviolet out into the far infrared.

Here the instrument will collect clear and cloudy sky spectra in the far infrared.

Atomic polarization appears to contribute 6% to the refractive index in the far infrared.

Diamond generates synchrotron light at wavelengths ranging from X-rays to the far infrared.

For ground-based observations, astronomers observe the tail of the black-body radiation in the far infrared.

Mammals with a skin temperature of about 300 K emit peak radiation at around 10 μm in the far infrared.

The fluffy regions, however, could not be wet, but there were plenty of other regions that glowed in the far infrared.

The main exception to this is shiny metal surfaces, which have low emissivities both in the visible wavelengths and in the far infrared.

Lasers emit beams of non-ionising radiation, at wavelengths spanning the ultraviolet to the far infrared.

It has a wider transmission range than the more common potassium bromide beamsplitters, extending its working range into the far infrared.

There is also a demand for supplies of devices such far infrared (FIR) bands, ionizers and acupuncture needles.

The observed relationship between the luminosity of the hydroxyl line and the far infrared suggests that hydroxyl megamasers are radiatively pumped.

Metal-mesh filters have many applications for use in the far infrared (FIR) and submillimeter regions of the electromagnetic spectrum.

As well as discovering new objects, IRAS demonstrated the benefit of selecting objects in the far infrared.

Spectrometer is a term that is applied to instruments that operate over a very wide range of wavelengths, from gamma rays and X-rays into the far infrared.

Examples include high-resolution imaging systems, thermal mapping systems, star trackers and their associated optical alignment equipment, operating at wavelengths from the extreme ultraviolet to the far infrared.

Measurements in the far infrared needed the development of accurately ruled diffraction gratings to replace the prisms as dispersing elements since salt crystals are opaque in this region.

Dr Torchinsky is the Canadian co-Investigator for the Heterodyne Instrument for the Far Infrared which will be one of three instruments to fly on the Herschel Space Observatory.

Because the system passively detects energy in the far infrared (heat) wavelengths, it avoids the disadvantages of active sensors, such as night vision or radar, minimizing the amount of detectable energy emitted by the aircraft.

For highly variable sources the result is unreliable, but it is useful for many kinds of sources which do not show much variability in the far infrared. 12,418 of these sources are also in the PSC, and co-adding has given some new flux density values.

Bioceramic nanoparticles are added to the fused polymer.Some types of ceramics show thermally-induced photoluminescence, emitting light in the far infrared (FIR) region of the electromagnetic spectrum.When in contact with the body heat, the thermoluminescence of the fabrics with embedded bioceramic is enhanced.

Lighter colors and also whites and metallic substances absorb less illuminating light, and thus heat up less; but otherwise color makes small difference as regards heat transfer between an object at everyday temperatures and its surroundings, since the dominant emitted wavelengths are nowhere near the visible spectrum, but rather in the far infrared.