Rods

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2-1-385

Special retinal receptor elements which are presumed to be primarily concerned with perception of light stimuli, when the eye is adapted to darkness.


Note: The rods probably play no part in colour stimulus discrimination (see "scotopic vision", 2-1-335).

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