In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.
coherer (plural coherers)
(physics) A detector of radio waves used in very early radio receivers.
Source: Wiktionary
Co*her"er, n. (Elec.)
Definition: Any device in which an imperfectly conducting contact between pieces of metal or other conductors loosely resting against each other is materially improved in conductivity by the influence of Hertzian waves; -- so called by Sir O. J. Lodge in 1894 on the assumption that the impact of the electic waves caused the loosely connected parts to cohere, or weld together, a condition easily destroyed by tapping. A common form of coherer as used in wireless telegraphy consists of a tube containing filings (usually a pinch of nickel and silver filings in equal parts) between terminal wires or plugs (called conductor plugs).
Source: Webster’s Unabridged Dictionary 1913 Edition
29 April 2024
(noun) a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.