Difference between revisions of "M unit"
Jump to navigation
Jump to search
(No difference)
|
Revision as of 13:00, 15 February 2009
4-1-900
The unit in terms of which the refractive modulus is expressed.
Reference: C.C.I.R.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)