Scottish scientist Mary Fairfax Somerville carried out experiments in magnetism, presenting a paper entitled'The Magnetic Properties of the Violet Rays of the Solar Spectrum'to the Royal Society in 1826, the second woman to do so.
42.
In fact, visible light is only a tiny portion of the entire electro-magnetic spectrum, which includes radio waves, micro waves, infra red rays, ultra violet rays, X-rays and gamma rays, and of course, visible light.
43.
Jon Burge of the Chicago Police Department, who was dismissed in 1992 following allegations of torture of suspects by Burge and detectives working under him in the 1970s and 1980s, may have used a violet ray.
44.
Many of the companies who were able to continue manufacturing violet rays after the depression, stopped making them due to World War II when they began manufacturing radio coils or other electrical components for the war instead.
45.
The framer will stitch it onto a piece of fabric, stretch it on a wood frame, and sometimes insert it in an acrylic vitrine or box designed to filter ultra-violet rays and protect the textile from dust.
46.
An antique violet ray set with glass electrodes and control box is featured in Bohumil Hrabal's 1974 novel " PostYi ~ iny " ( Cutting It Short ), as well as JiY?Menzel's 1980 film adaptation of the same.
47.
The ultra-violet light to produce these effects may be obtained from an arc lamp, or by burning magnesium, or by sparking with an induction coil between zinc or cadmium terminals, the light from which is very rich in ultra-violet rays.
48.
A typical violet ray device consisted of an ungrounded electrical control box that controlled the interrupter and which housed the magneto coil, and an attached bakelite or other handle housing which contained the high voltage coil and an insertion port for attachments.
49.
Tesla used these circuits to conduct innovative experiments in electrical lighting, phosphorescence, X-ray generation, high frequency alternating current phenomena, electrotherapy, and the sparkgap radio transmitters for wireless telegraphy until the 1920s, and in medical equipment such as electrotherapy and violet ray devices.
50.
The company was subjected to a 1951 lawsuit in Marion, Indiana, and the devices were seized by the FDA . While their manufacture was prohibited in the US by case law, violet ray electrotherapy devices are still manufactured by companies outside of the US.
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