Book Description

Excerpt from Optical Radiation Measurement With Selected Detectors and Matched Electronic Circuits Between 200 Nm and 20 Μm Improved detector technology in the past decade opened a new era in the field of radiometric and photometric calibrations. Now, cryogenic electrical substitution radiometers with optical power measurement uncertainty are the primary standards of the field. New generation radiometers, built with high electronic and radiometric performance detectors, became the transfer and working standards to propagate the high accuracy from the primary standard to field level measurements. The importance of high quality detector standards has greatly increased as a result of demands in a wide range of technical areas. Nowadays, lamp standards, traditionally calibrated against source standards, are calibrated against detector standards to obtain improved calibration accuracy. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.