Photography. Industrial radiographic films. Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation shop-only The central power supplies are

The central power supplies are intended to energize emergency escape lighting in the case of failure of the normal supply

Annex A (normative) Minimum requirements for the measurement plan

This International Standard specifies a lossless compression algorithm to reduce the number of bits required to represent information coded by means of 8-bit bytes

but this does not limit their application

• State timing

Photography. Industrial radiographic films. Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation shop-only The central power supplies are1 Scope This International Standard specifies methods for determining sensitometric curve shape, ISO speed, ISO average gradient and ISO gradientsG2 and G4 for industrial radiographic systems consisting of film and film processing when exposed directly to X rays and rays. The measurement of characteristics of film systems used in industrial radiography with fluorescent intensifying screens is not specified in this International Standard. NOTE Units of