An Amici roof prism is a special prism that is meant to deviate a beam of light by ninety degrees while inverting the image. Shaped like a right angled prism whose hypotenuse has been replaced by a 90 ...

If you’ve been to the Burrard Dry Dock Pier in the last few days, you might have noticed some tall and shiny new toys to play with. The pivoting prisms along the North Van pier are part of a new ...