Sub-refraction

From International Dictionary of Marine Aids to Navigation
Revision as of 12:00, 15 February 2009 by Oferiks (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

4-1-930

Refraction for which the refractive modulus gradient is positive and greater than standard.

Reference: C.C.I.R.




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