COELOSTAT

coelostat

(noun) optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror

Source: WordNet® 3.1


Etymology

Noun

coelostat (plural coelostats)

(astronomy) A device that rotates a telescope so as to keep its orientation constant with relation to the stars.

Source: Wiktionary



RESET




Word of the Day

17 May 2024

FUNERAL

(noun) a ceremony at which a dead person is buried or cremated; “hundreds of people attended his funeral”


coffee icon

Coffee Trivia

Some 16th-century Italian clergymen tried to ban coffee because they believed it to be “satanic.” However, Pope Clement VII loved coffee so much that he lifted the ban and had coffee baptized in 1600.

coffee icon