Hello Bill, You might try Fer de Vries' ZONWVLAK, which designs flat submerged dials, along with its other features. You may choose the refractive index. I've never constructed a submerged flat dial, but have used the ZONWVLAK suite of programs to compute and view such.
Good luck, Mac Oglesby (snip) >I am a reasonably good craftsman, and can follow mathematical "recipes" >as well as anyone, but I go into brainlock whenever innovative reasoning >is called for. Thus, the question. Postulating a dialist with too much >time on his hands, who has a tranquil artificial backyard pond with good >sun exposure, and who wants to impress the neighbors, how would one have >to modify the hour line equation for horizontal dials to take into >account the way the refraction of water? From what I recall from high >school physics, would there not also be portions of the dial on either >side of the style where sunlight would not penetrate, due to the light >rays bouncing back off the water after a certain slant had been reached? > >Also, has anyone tried this before? > >Any advices would be appreciated, and thank you. > >All best, > >Bill Daciuk >Swarthmore PA USA 39 54 N, 75 21 W
