title: Radiation standards.
abstract: The NPL maintains standards and provides calibrations for measuring the spectral emission of sources and the spectral sensitivity of detectors in the uv, visible, and near ir range. A brief account is given of the way these standards are established, the use of different types of calibration, and the accuracy attainable.
authors.forename: E J
authors.initials: EJ
authors.lastname: Giliham