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Scientific Studies; or, Practical, in Contrast with Chimerical Pursuits
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Henry Dircks
Henry Dircks FRSE FCS was an English engineer who is considered to have been the main designer of the projection technique known as Pepper's ghost in 1858. It is named after John Henry Pepper who implemented a working version of the device in 1862. Dircks also investigated attempts at the invention of a perpetual motion device, writing that those who sought to create such a thing were "half-learned" or "totally ignorant".
Biography from Wikipedia, CC BY-SA 4.0. Portrait: via Wikipedia (see source).
