Home › Evil Mad Scientist Forums › Clock Kits › Bulbdial clock – Thoughts on build and question on shadows › Re: Bulbdial clock – Thoughts on build and question on shadows
I see that I didn’t answer the question about the rear projection clock face.
By contrast, the optional Rear Projection Clock Face is made of translucent and textured light-diffusing acrylic plastic. One side of the clock face is smooth, with printed numbers on it. Unlike with the regular clock face, the gnomon (spike) is attached on the “back” side of the clock face, protruding from the side without printed numbers. The clock face is installed with the gnomon pointing towards the inside of the clock (towards the LEDs), and the numbers on the outside of the clock. When viewing the clock, you look at the side with the clock that has the printed clock face, and see the shadow hands– in rear projection –cast by the LEDs and gnomon upon that surface.