The National Measurement System for Radiometry and Photometry.

摘要

The National Measurement System Study is concerned with the measurement of the energy or power in ultraviolet,visible and infrared radiation. This study has shown that radiometry and photometry are having a significant economic and social impact in the U.S. today and this impact is expected to increase. The capability of this portion of the measurement system is inadequate for today's needs. An accuracy of a few percent is frequently needed; 10-50percent is commonplace. The reason is that radiometric and photometric measurements are very difficult to make,and there is too little expertise to make these difficult measurements. NBS'program is designed to improve the situation by (1) making the measurements easier through simpler,inexpensive standards and techniques and (2) increasing the expertise through a Self-Study Manual on the subject.