'Arranged for a demonstration by A W Isenthal, before The Royal Photographic Society. The Authors as Operator and Subject'. A W Isenthal was a Fellow of the Royal Photographic Society, a member of the Council of the Roentgen Society, and joint author of 'Practical Radiography' (1898). His company, Isenthal, Potzler & Co, had a radiographic laboratory and sold 'Radiographic Outfits of the most perfect kind'. In 1895 German physicist Wilhelm Konrad Roentgen (1845-1923) had discovered X-rays which travelled in a straight-line and passed through card, but could be detected by a photographic plate or fluorescent screen. Later, he found that they were able to pass through flesh and take photographic images of bones inside the body.
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