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    brother and successor Frederik Bernhard Albinus, showing a few of the over 750 wet and dry anatomical samples that Bernhard Siegfried collected, and a wide...
    42 KB (3,833 words) - 19:45, 26 June 2024
  • (face-centered cubic) and hexagonal close packing arrangements. 1621 – Willebrord Snellius reformulates the laws of refraction and reflection of light into Snell's...
    56 KB (5,967 words) - 23:41, 13 July 2024