Found 1 items, similar to Heliometer.
English → English (gcide)
Definition: Heliometer
Heliometer
\He`li*om"e*ter\, n. [Helio- + -meter: cf. F.
h['e]liom[`e]tre.] (Astron.)
An instrument devised originally for measuring the diameter
of the sun; now employed for delicate measurements of the
distance and relative direction of two stars too far apart to
be easily measured in the field of view of an ordinary
telescope.