 | 2001 - 756 pages
...subject to §862.9. [52 FR 16122, May 1. 1987, as amended at 65 FR 2309, Jan. 14, 2000] §862.2800 Refractometer for clinical use. (a) Identification....conditions. (b) Classification. Class I. The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter. [52 FR... | |
 | 1996 - 672 pages
...pipettors, dispensers, and pipetting stations. (b) Classification. Class I. §862.2800 Refrac tome tor for clinical use. (a) Identification. A refractometer...conditions. (b) Classification. Class I. The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter. [52 FR... | |
 | 1988 - 590 pages
...semi-automated dilutors, pipettors, dispensers, and pipetting stations. (b) Classification. Class I. § 862.2800 Refractometer for clinical use. (a) Identification....of certain conditions. (b) Classification. Class I. §862.2850 Atomic absorption spectrophotometer for clinical use. (a) Identification. An atomic absorption... | |
 | 1990 - 630 pages
...semi-automated dilutors, pipettors, dispensers, and pipetting stations. (b) Classification. Class I. § 862.2800 Refractometer for clinical use. (a) Identification....of certain conditions. (b) Classification. Class I. § 862.2850 Atomic absorption spectrophotometer for clinical use. (a) Identification. An atomic absorption... | |
 | Bela G. Liptak - 1994 - 504 pages
...OPERATION A refractometer measures the refractive index (RI) of a liquid sample. Refractive index is the ratio of the velocity of light in a vacuum to the velocity of light in the material. Refraction of light (angularity change) occurs at the interface of two different mediums,... | |
 | Kai Sondergaard, J. Lyngaae-Jorgensen - 1995 - 604 pages
...usually changed in direction crossing the media interface. See Refractive index. Refractive index: (1) The ratio of the velocity of light in a vacuum to the velocity of light in the medium whose index of refraction is desired. (2) Relative refractive index is the ratio of the sines... | |
 | Clarence T. Jones, S. Percy Jones - 1996 - 484 pages
...sines of the incidence angle and the refraction angle, when light passes from one medium to another. 2) The ratio of the velocity of light in a vacuum, to the velocity of light in the transmission medium whose refractive index is desired. refractory metal thermocouple: A class of thermocouples... | |
 | Alexander G. Alenitsyn, Eugene I. Butikov, Alexander S. Kondratyev - 1997 - 536 pages
...dimensionless quantities: angle (ratio of the length of an arc to the radius), refractive index of light (the ratio of the velocity of light in a vacuum to the velocity of light in a substance). Physical quantities whose numerical values change as the scale of units is changed are... | |
 | Arthur P. Cracknell, E.S. Rowan - 1989 - 440 pages
...incidence or refraction in air and water respectively. The refractive index of a medium is defined as the ratio of the velocity of light in a vacuum to the velocity of light in that medium. Ordinarily, na is usually taken to be equal to 1 and for most purposes nw can be regarded... | |
 | Rudolf F. Graf - 1999 - 540 pages
...property of a material that describes the behavior of optical energy passing through it. It is defined as the ratio of the velocity of light in a vacuum to the velocity of light in the material. It varies with wavelength. index register— 1. In a computer, a register that holds a quantity... | |
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... (the ratio of the velocity of light in a vacuum to the velocity of light in the solution). 
