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Most sales of the initial aircraft were not in the passenger field, but rather the military field. The 262D was the most popular and marketed as Frégate. [7] As for the American designation, the "Mohawk 298" airplanes were modified Nord 262s and first flew on 7 January 1975, equipped with Pratt & Whitney Canada PT6A-45 turboprops.
The falling cat problem has elicited interest from scientists including George Gabriel Stokes, James Clerk Maxwell, and Étienne-Jules Marey.In a letter to his wife, Katherine Mary Clerk Maxwell, Maxwell wrote, "There is a tradition in Trinity that when I was here I discovered a method of throwing a cat so as not to light on its feet, and that I used to throw cats out of windows.
Magnetophon from a German radio station in World War II.. The reel-to-reel format was used in the first magnetic recording systems, wire recording and then in the earliest tape recorders, including the pioneering German-British Blattnerphone (1928) machines which used steel tape, [3] and the German Magnetophon machines of the 1930s.
The Dick Van Dyke Show is an American television sitcom. The series ran for five seasons on CBS, lasting 158 half-hour episodes, all filmed in black-and-white. Creator/writer Carl Reiner had told the cast from the beginning that if the show made it through five seasons, that would be its maximum run. Series overview Cast of the series All five seasons have been released on DVD by Image ...
Schrödinger's cat: a cat, a flask of poison, and a radioactive source connected to a Geiger counter are placed in a sealed box. As illustrated, the quantum description uses a superposition of an alive cat and one that has died. In quantum mechanics, Schrödinger's cat is a thought experiment concerning quantum superposition.
The Wason selection task (or four-card problem) is a logic puzzle devised by Peter Cathcart Wason in 1966. [1] [2] [3] It is one of the most famous tasks in the study of deductive reasoning. [4] An example of the puzzle is: You are shown a set of four cards placed on a table, each of which has a number on one side and a color on the other.
"Don't Worry, Be Happy" is a 1988 song by Bobby McFerrin, released as the first single from his album Simple Pleasures (1988). It was the first a cappella song to reach number-one on the Billboard Hot 100 chart, a position it held for two weeks.
When posing it in the early 20th century, Henry Dudeney wrote that it was already an old problem. It is an impossible puzzle: it is not possible to connect all nine lines without crossing. Versions of the problem on nonplanar surfaces such as a torus or Möbius strip, or that allow connections to pass through other houses or utilities, can be ...