Difference between revisions of "Focusing"
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Latest revision as of 03:58, 3 February 2024
2-2-155
1. The operation of placing a point object at the focus of an optical apparatus.
2. The operation of placing a light source about or near the focus of an optical apparatus in such a way as to produce a desired light distribution.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
