Glass Presses

Title

Glass Presses

Subject

Polarized Light

Description

Glass, when stressed, shows the property of double refraction: light of differing polarization directions bends differently passing through the glass. When placed between crossed polarizers , bands of color may be seen, with the spacing of the bands being correlated to the amount of stress present at a particular point: small spacing indicates large stress. These devices were for stressing glass samples to demonstrate this effect.

Source

Property of the W&L Physics & Engineering Department

Files

http://s3.amazonaws.com/omeka-net/2253/archive/files/08e93540e3167e6811f9dfd70eecf1e0.JPG

Citation

“Glass Presses,” Digital Exhibits at Washington and Lee University Library, accessed November 20, 2017, http://omeka.wlu.edu/items/show/179.