ding a piece of glass at an angle of 540* vvith the horizon on a sheet of paper on the table. If a coin, for instance, is raised vertically above the table facing the glass (with the glass leaning from the coin) its reflection will be seen by looking through the glass, and it can be copied with a… … looking-glass, at an angle of 22\ degrees with the horizon, and then having a piece of plain glass elevated at an equal angle with the vertical, the object will appear direct , and can be copied as before. The image will be seen on a piece of paper at F, if the eye is placed as represented. * See…
Light · Color · Optical illusions · Optics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
