Template:Selected anniversaries/May 4: Difference between revisions

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||1675: King Charles II of England orders the construction of the Royal Greenwich Observatory. Pic.
||1675: King Charles II of England orders the construction of the Royal Greenwich Observatory. Pic.


File:Isaac Barrow.jpg|link=Isaac Barrow (nonfiction)|1677: Mathematician and theologian [[Isaac Barrow (nonfiction)|Isaac Barrow]] dies. He played an early role in the development of infinitesimal calculus.
File:Isaac Barrow.jpg|link=Isaac Barrow (nonfiction)|1677: Mathematician and theologian [[Isaac Barrow (nonfiction)|Isaac Barrow]] dies. Barrow played an early role in the development of infinitesimal calculus: he was the first to calculate the tangents of the kappa curve.


File:Huygens sketches of Death.jpg|1680: Steganographic analysis of sketches by [[Christiaan Huygens (nonfiction)|Huygens]] for a projection of Death taking off his head, an early example of [[Phantasmagoria (nonfiction)|Phantasmagoria]], reveals "several hundred uinits" of unencrypted data.  (The archaic term "uinit" is thought to roughly correspond with a kilobyte.)
File:Huygens sketches of Death.jpg|1680: Steganographic analysis of sketches by [[Christiaan Huygens (nonfiction)|Huygens]] for a projection of Death taking off his head, an early example of [[Phantasmagoria (nonfiction)|Phantasmagoria]], reveals "several hundred uinits" of unencrypted data.  (The archaic term "uinit" is thought to roughly correspond with a kilobyte.)

Revision as of 06:57, 4 May 2019