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RickStudent, Philosopher, Writer, Developer

Siméon Denis Poisson —
Photo Credit: By François Séraphin Delpech - .Public Domain, https://commons.wikimedia.org/w/index.php?curid=378439

Siméon Denis Poisson

Portrait of Évariste Galois aged about 15 —
Photo Credit: Galois - Œuvres mathématiques, Gauthier-Villars, 1897, p.18, Public Domain, https://commons.wikimedia.org/w/index.php?curid=28955392

Portrait of Évariste Galois aged about 15

Bitcoin genesis block — Satoshi Nakamoto message embedded in the coinbase of the first block
Photo Credit: By MikeG001 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=83911930

Bitcoin genesis block Satoshi Nakamoto message embedded in the coinbase of the first block

blank mask —
Photo Credit: https://th.aliexpress.com/w/wholesale-blank-mask.html

Chaucer Astrolabe So-called Chaucer Astrolabe dated 1326, similar to the one Chaucer describes, British Museum

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Media Contributed by Rick

RickStudent, Philosopher, Writer, Developer

Siméon Denis Poisson

Portrait of Évariste Galois aged about 15

Bitcoin genesis block Satoshi Nakamoto message embedded in the coinbase of the first block

blank mask

Bitcoin

Hal Finney

Emblem of the Polish General Staff

The classification of Al-Qalqashandi

page of Ṣubḥ al-aʿshā

Equatorium

Chaucer Astrolabe So-called Chaucer Astrolabe dated 1326, similar to the one Chaucer describes, British Museum