Definitions for transmissometer
trans·mis·some·ter

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1. transmissometernoun

   An optical instrument used to measure the transmission of light through a material

WikipediaRate this definition:0.0 / 0 votes

1. Transmissometer

   A transmissometer or transmissiometer is an instrument for measuring the extinction coefficient of the atmosphere and sea water, and for the determination of visual range. It operates by sending a narrow, collimated beam of energy (usually a laser) through the propagation medium. A narrow field of view receiver at the designated measurement distance determines how much energy is arriving at the detector, and determines the path transmission and/or extinction coefficient. In a transmissometer the extinction coefficient is determined by measuring direct light transmissivity, and the extinction coefficient is then used to calculate visibility range.Atmospheric extinction is a wavelength dependent phenomenon, but the most common wavelength in use for transmissometers is 550 nm, which is in the middle of the visible waveband, and allows a good approximation of visual range.Transmissometers are also referred to as telephotometers, transmittance meters, or hazemeters. Transmissometers are also used by oceanographers and limnologists to measure the optical properties of natural water. In this context, a transmissometer measures the transmittance or attenuation of incident radiation from a light source with a wavelength of around 660 nm, generally through a shorter distance than in air, as water has a smaller maximum visibility distance.

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1. Transmissometer

   A transmissometer is an instrument for measuring the extinction coefficient of the atmosphere, and for the determination of visual range. It operates by sending a narrow, collimated beam of energy through the propagation medium. A narrow field of view receiver at the designated measurement distance determines how much energy is arriving at the detector, and determines the path transmission and/or extinction coefficient. Atmospheric extenction is wavelength dependent phenomenon, but the most common wavelength in use for transmissometers is 550 nm, which is right in the middle of the visible waveband, and allows a good approximation of visual range. Transmissometers are sometimes referred to as telephotometers, transmittance meters, or hazemeters. The term transmissometer is also used by oceanographers and limnologists to refer to a device for measuring the optical properties of natural water. In this context, a transmissometer measures the transmittance or attenuation of incident radiation from a light source with a select wavelength, often 660 nm, through a defined cell volume.

How to pronounce transmissometer?

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How to say transmissometer in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of transmissometer in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of transmissometer in Pythagorean Numerology is: 1

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Transmissometer
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Transmissometer
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=transmissometer