Carbon Arc Lamp
A low current density arc lamp with carbon electrodes not containing any other material.
Note: In Germany, the term Kohlebogenlampe covers all arc lamps with carbon electrodes of any composition.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Celsius (previously Centigrade)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM