Tabic Clocks Handmade Moon Phase Clock In Chrome With White Dial C-MN-WHT

Moon Phase Clock In Chrome With White Dial This is a wonderful gift item, and a beautiful example of mathematical and scientific craftsmanship. The moon phase clock presents the current lunar phase on its face, so that the moon appears to change in the location and style of illumination viewed through the clock's glass face just as it does in the sky. Viewed from Earth, only 59% of its surface is illuminated by the Sun at any one time; this fraction varies over lunar phases due to the changing orientation of the Moon's orbit with respect to the Sun. In turn, this varies over the month due to actual orbital motion of the Moon around Earth, causing varying differences in timing of true sunrise and sunset (the "equation of time"). This creates an appearance as if part of the Moon were "missing". New Moon Phase Clock set in a heavy six inch solid brass case which has been electroplated with chromium and comes with a flat glass(not plastic) front and rubber seal. These are not a mass produc