Template:Are You Sure/March 25: Difference between revisions
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... that in 1857, printer, bookseller, and inventor '''[[Édouard-Léon Scott de Martinville (nonfiction)|Édouard-Léon Scott de Martinville]]''' received a patent for the phonoautograph, which records an audio signal as a photographic image? | • ... that in 1857, printer, bookseller, and inventor '''[[Édouard-Léon Scott de Martinville (nonfiction)|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 (nonfiction)|Philbert Maurice d’Ocagne]]''' founded the field of [[nomography]], the graphic computation of algebraic equations? | |||
Latest revision as of 05:32, 25 March 2022
• ... 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?