Sept. 14 (UPI) --Police in an Illinois town are trying to identify a mysterious white or translucent object seen flying in the daytime sky. Prophetstown Police Chief Bruce Franks said he was off-duty ...

Light can pass straight through transparent close transparentA material, object or substance which allows light to pass through it so that an image can be clearly seen through it. materials.

The SA1E-X models of photoelectric sensors feature advanced optic function for transparent or translucent object detection, with optimum response speed of 500μs said to be one of the fastest on the ...