An instrument for determining the time of apparent noon. Itconsists of two mirrors and a plane glass disposed in the form of aprism, so that, by the reflections of the sun's rays from theirsurfaces, two images are presented to the eye, moving in oppositedirections, and coinciding at the instant the sun's center is on themeridian.

]]>https://definedictionarymeaning.com/topic/10050/dipleidoscopeRSS for NodeThu, 11 Jun 2026 10:20:37 GMTTue, 21 Mar 2017 19:27:37 GMT60