Radiometer including means for alternately measuring both power

Remote pointing system, device, and methods for identifying...

Scalar irradiance meter

Scanning imaging system having reduced detected signal aliasing

Semiconductor storage apparatus

Solar energy device and method

Solar energy metering and recording system

Spatial scanning means for a photometer

Subtractive measurement method and apparatus for CRT output inte

Sun meter

Sun meter and method of operation

Sunlight measuring device

System for measuring radiance

System for measuring radiance, transmittance and reflectance

System for measuring radiance, transmittance and reflectance

System of photodetection and associated process for analyzing a

Systems for statically determining brightness characteristics of

Torque measuring apparatus for rotating body

Unicell photoelectric photometer

Unicell photometer device