Hypertext Webster Gateway: "photometry"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Photometry \Pho*tom"e*try\, n. [Cf. F. photom['e]trie.]
That branch of science which treats of the measurement of the
intensity of light.
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.