David Brewster, creator of Brewster's Law, patented this device in 1817. It consisted of a long, hollow tube containing two glass mirrors running along the length of the tube and separated from each other at an angle of 60 degrees. Where mirrors...
Scientific apparatus and instruments; Camera lucida;
An artist's aid for drawing, the camera Lucida was a portable device that was used to reproduce visual images on to paper. An adjustable prism mounted on the end of a supporting arm reflects the surrounding light and produces the image onto the...
The Goniometer is an instrument for measuring the angles of crystals by observing the direction of a beam of light reflected from their face. The instrument was invented by W.H. Wollaston in 1807. Physical Description: Round brass base with black...
Scientific apparatus and instruments; Optical instruments
This device was used with a prism to demonstrate the seven colors of the specturm present in a beam of sunlight: red, orange, yellow, green, blue, indigo and violet. Physical Description: Seven movable mirrors, pivoted on brass holders, set in an...
Scientific apparatus and instruments; Santa Clara University (Calif.); Camera lucida;
An artist's aid for drawing, the camera Lucida was a portable device that was used to reproduce visual images on to paper. An adjustable prism mounted on the end of a supporting arm reflects the surrounding light and produces the image onto the...
