Photometers or light meters are radiometers that include a filter and photodiode and responds based on the average human eye: the CIE 1924 luminosity function V λ. However, the light sensitive diode ...

With its dual-wavelength sensor detector, the Spectroline AccuMAX XRP-3000 digital radiometer/photometer from Spectronics measures both ultraviolet and visible light from a wide variety of light ...

Anyone know of a logging Light meter or direct output photometer that I could use to measure the evanescence of the phosphor of a CRT? DOesn't need to be accurate - I just need to see the envelope of ...

With the smartphone becoming steadily more and more ubiquitous, it's even managing to worm it's way into areas of our life where it can replace bits of kit once deemed essential. The light meter is a ...