Template:Are You Sure/March 25

From Gnomon Chronicles
< Template:Are You Sure
Revision as of 06:32, 25 March 2022 by Admin (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

• ... that in 1857, printer, bookseller, and inventor Édouard-Léon Scott de Martinville received a patent for the phonoautograph, which records an audio signal as a photographic image?

• ... that mathematician and engineer Philbert Maurice d’Ocagne founded the field of nomography, the graphic computation of algebraic equations?

Retrieved from "https://gnomonchronicles.com/w/index.php?title=Template:Are_You_Sure/March_25&oldid=93736"