FIELD: physics.
SUBSTANCE: sun clock comprises spherical dome located at analemma dome and optical receiver located there under. Said dome is translucent and secured at the support with inner and outer spherical surfaces provided with analemmas secured thereat. Said analemmas are composed of chains consisting of interconnected segments that carry symbol designation of months and appropriate sun hour. Configuration and number of analemmas are calculated so that shadow of symbol mark falls on optical receiver surface which corresponds to true sun hour at sun motion over coelosphere. Said support is provided with at least one through opening while spherical support inner surface and optical receiver surface have the Earth map image applied thereon to divide the parallel circle to hemispheres crossing the central point marked at optical receiver. Note here the hemispheres are oriented in space in compliance true position of cardinal points while central point marked at optical receiver complies with geographical position of sun clock.
EFFECT: simplified use, enhanced performances.
7 cl, 2 dwg
