Measuring light intensity

Measuring light intensity

A200/0420 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.0MB

Downloadable file size: 2.2MB

Price image Pricing

Please login to use the price calculator



Caption: Measuring light intensity. Scientist using a cryogenic radiometer to measure light intensity. The cryogenic radiometer is an instrument that precisely measures the standard unit for luminous intensity, the candela. It does this by measuring the power of an intensity stabilised laser beam at cryogenic (sub-zero) temperatures inside a vacuum. Photographed at the National Physical Laboratory in Teddington, UK.

Release details: Model release not available. Property release not required.

Keywords: 30s, adjusting, adjustment, adult, brightness, britain, british, cryogenic radiometer, cryogenics, detect, detecting, detection, dial, equipment, female, fine-tuning, human, lab, laboratory, light, light intensity, luminous intensity, measure, measurement, measuring, national physical laboratory, npl, optical, optics, oriental, people, person, physical, physicist, physics, primary standard, radiometric, radiometry, research, researcher, researching, scientist, sub-zero temperatures, teddington, thirties, uk, united kingdom, woman

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.