MIL-HDBK-1908 Definitions of Human Factors TermsThis handbook defines terms frequently used in human factors standardization documents by providing common meanings of such terms to ensure that they will be interpreted consistently and in the manner intended.

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MIL-HDBK-1908B

Wet bulb globe temperature (WBGT) gen.  A meteorological measurement which can be used as an index to designate conditions of temperature and humidity at which on-set of heat stress

can be expected at a particular energy expenditure level.  It is calculated as follows:

WBGT = 0.7TWBnp + 0.2Tg + 0.1TA

where  TWBnp =   non-psychrometric (np) wet-bulb (WB) temperature

Tg =   temperature at interior center of a 15.2 cm (6 in) black globe) TA =   non-psychrometric, but shaded, dry bulb (air) temperature.

Work station uci.  The general physical environment in which the user works.  It includes such things as computer terminals, source documents, desks, chairs, and lighting.  Also used to refer to a computer terminal capable of sophisticated stand-alone operation, such as computer-aided-design, computer-aided-engineering, and desktop publishing.

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