pile of old style data transfer floppy discs, rotating spinning background
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pile of old style data transfer floppy discs, rotating spinning background
Oct 22, 2018
Adobegen_oksi
Two identical discs of same radius R are rotating about their a... | Filo
Two identical discs of same radius R are rotating about their a... | Filo
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Two identical discs of same radius R are rotating about their a... | Filo
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This rotating volvelle is from John Dee's copy of Trithemius' Polygraphie (1561). The German abbot Trithemius (1462-1516) wrote about code breaking and about communication with spirits, both topics known to interest Dee. The Polygraphie is the first printed book about cryptography - the science and art of making and breaking codes. The copy owned by Dee contains practical devices, cipher discs, to help the reader encrypt or decrypt text. There are 12 rotating paper discs known as 'volvelles' tha
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This rotating volvelle is from John Dee's copy of Trithemius' Polygraphie (1561). The German abbot Trithemius (1462-1516) wrote about code breaking and about communication with spirits, both topics known to interest Dee. The Polygraphie is the first printed book about cryptography - the science and art of making and breaking codes. The copy owned by Dee contains practical devices, cipher discs, to help the reader encrypt or decrypt text. There are 12 rotating paper discs known as 'volvelles' tha
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Homo Curious Sapiens(Curious Humans) on Instagram: "Ever wondered how number locks actually work? Inside that simple dial is a clever system of rotating discs that only line up when the correct code is entered. One wrong number and the lock stays sealed. Simple on the outside, surprisingly precise on the inside. Sometimes the strongest security is just perfect alignment. Behind the dial are multiple rotating wheels, each with a notch cut into it. When you turn the dial, you are rotating these wh
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Homo Curious Sapiens(Curious Humans) on Instagram: "Ever wondered how number locks actually work? Inside that simple dial is a clever system of rotating discs that only line up when the correct code is entered. One wrong number and the lock stays sealed. Simple on the outside, surprisingly precise on the inside. Sometimes the strongest security is just perfect alignment. Behind the dial are multiple rotating wheels, each with a notch cut into it. When you turn the dial, you are rotating these wh
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