DIPLEIDOSCOPE

Etymology

Noun

dipleidoscope (plural dipleidoscopes)

(astronomy) An instrument for determining the time of apparent noon. It consists of two mirrors and a plane glass in the form of a prism, so that, by the reflections of the sun's rays from their surfaces, two images are presented to the eye, moving in opposite directions, and coinciding at the instant the sun's centre is on the meridian.

Source: Wiktionary


Di*plei"do*scope, n. Etym: [Gr. -scope.] (Astron.)

Definition: An instrument for determining the time of apparent noon. It consists of two mirrors and a plane glass disposed in the form of a prism, so that, by the reflections of the sun's rays from their surfaces, two images are presented to the eye, moving in opposite directions, and coinciding at the instant the sun's center is on the meridian.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

17 January 2025

OBSERVE

(verb) conform one’s action or practice to; “keep appointments”; “she never keeps her promises”; “We kept to the original conditions of the contract”


coffee icon

Coffee Trivia

In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.

coffee icon