Flick (physics)

This article is about the unit of spectral radiance. For the unit of time, see Flick (time).

In optical engineering and telecommunications engineering, the flick is a unit of spectral radiance. One flick corresponds to a spectral radiance of 1 watt per steradian per square centimeter of surface per micrometer of span in wavelength (W·sr−1·cm−2·μm−1). This is equivalent to 1010 watts per steradian per cubic meter (W·sr−1·m−3). In practice, spectral radiance is typically measured in microflicks (10−6 flicks).[1] One microflick is equivalent to 10 kilowatts per steradian per cubic meter (kW·sr−1·m−3).[2]

  1. ^ Palmer, James M. "The SI system and SI units for Radiometry and photometry" (PDF). Archived from the original (PDF) on 2012-08-02. Retrieved 2012-08-10.
  2. ^ Rowlett, Russ. "How Many? A Dictionary of Units of Measurement". Archived from the original on 20 September 2012. Retrieved 10 August 2012.