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A violet ray is an antique electrotherapy medical device invented by Nikola Tesla that�s essentially a portable tesla coil. Altdorf, Germany-based photographer Marc Simon Frei purchased a unit from 1920 on eBay and customized it for experiments with photographing electricity at home.
Frei generated electrical discharges in various ways and forms, and then captured them using a Nikon Df, a macro extension tube, and a Nikon 50mm f/1.8 lens.
�Don�t try this at home,� Frei says, �the high frequency voltage could damage your equipment.� Bringing his camera close to the apparatus also caused his LCD screen to flicker.
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Frei has also experimented with creating miniature lightning at home using some stuffing taken from the guts of a teddy bear as clouds. �I wanted to create a private thunderstorm at home,� he tells us.
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You can find more images from Frei�s experiments and follow along with the series in this online photo album.
(via Marc Simon Frei via Colossal)

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.