Editing Emerging technologies, emerging markets – fostering the innovation potential of research infrastructures
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Nephelometers are instrument devoted to the measurement of the scattering coefficient of the aerosol particles (Heintzenberg and Charlson 1996). They usually work following the so- called inverse method, that is, they measure the light scattered the particles in a specific direction and that was emitted by a (hemi)-spherical source. It is inverse in the sense that the scattering coefficient refers to the light scattered in any direction and coming from a very narrow one. They can operate at one or more wavelengths, from UV to near IR. They need periodic calibration with standard gas, such as CO2. | Nephelometers are instrument devoted to the measurement of the scattering coefficient of the aerosol particles (Heintzenberg and Charlson 1996). They usually work following the so- called inverse method, that is, they measure the light scattered the particles in a specific direction and that was emitted by a (hemi)-spherical source. It is inverse in the sense that the scattering coefficient refers to the light scattered in any direction and coming from a very narrow one. They can operate at one or more wavelengths, from UV to near IR. They need periodic calibration with standard gas, such as CO2. | ||
− | + | TABLE26STRENGTHSANDLIMITATIONSOFNEPHELOMETERS | |
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− | + | TABLE 27 COMPANIES PRODUCING NEPHELOMETERS | |
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=====2.2.2.2.4 LIDARs===== | =====2.2.2.2.4 LIDARs===== |