Scotopic Vision

From International Dictionary of Marine Aids to Navigation
Jump to navigation Jump to search

2-1-335

Vision by the normal eye when adapted to levels of luminance below some hundredths of a candela per square metre.

Note: The rod receptors in the retina are considered to be the principal active elements under these conditions. The spectrum appears uncoloured and the maximum luminous efficiency is shifted to a shorter wavelength than in photopic vision.

Reference: C.I.E.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

Contrast

Celsius (previously Centigrade)

Capacitance

charge current

Intensity

Illuminance

Energy

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM