Ann Arbor invention clocks hours of sunlight

They’re not exactly building sun dials at the University of Michigan. The hours of day light clock is coming to a computer near year courtesy of a local inventor.Excerpt:ANN ARBOR — John Rosevear’s opus, 40 years in the making, can be seen projected on a wall at the Slusser Gallery on the University of Michigan North Campus. Or you could order one for your computer desktop. It’s called the Skyclock — an invention that takes a standard analog clock view and uses precisely calibrated data for geographic points to mark sunrise, sunset and how long twilight will last on any given day in any given place. Rosevear and his business partner, Rob Baxtresser, are hoping the concept will open new horizons for clock-watchers everywhere. Read the rest of the story here.