The Violet Ray was an electrical “therapy” device that was popular in the early twentieth century. Manufacturers of Violet Rays made all sorts of outrageous claims about what the Violet Ray could cure. In the late 1940s and 1950s the FDA brought a series of lawsuits over the spurious claims the manufacturers made, which ended the popularity of the Violet Ray.
The Health Sciences Library has a Violet Ray and it is currently on display on the 2nd floor of the library. Stop by and check it out!