出典:Wiktionary
出典:『Wiktionary』 (2025/03/07 19:58 UTC 版)
From diplo- (“double”) + Ancient Greek εἶδος (eîdos, “image”) + -scope.
dipleidoscope (plural dipleidoscopes)
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “dipleidoscope”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)
出典:Wikipedia
出典:『Wikipedia』 (2008/03/04 23:08 UTC 版)
A dipleidoscope is an instrument used to determine true noon. It consists of a small telescope and a prism that creates a double image of the sun. When the two images overlap, it is local true noon. The instrument is capable of determining true noon to within ten seconds.