A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle that emits sound in the ultrasonic range, which humans cannot hear...

"The Galton Whistle" is a science fiction short story by American writer L. Sprague de Camp, a story in his Viagens Interplanetarias series. It is the...

the monopole-like characteristics of the Hartmann whistle. A cousin to the Hartmann whistle is shown in the figure on the right, the Galton whistle....

and was the first to establish a complete record of short-term climatic phenomena on a European scale. He also invented the Galton Whistle for testing...

vision. Francis Galton in 1893 invented the Galton whistle, an adjustable whistle that produced ultrasound, which he used to measure the hearing range of...

(1845-1912). Friedrich Bezold @ Who Named It "Galton Whistle." @ National Museum of American History "Galton's Whistle," National Museum of American History....

includes "The Inspector's Teeth," "Summer Wear," "Finished," "The Galton Whistle," "The Animal-Cracker Plot," "Git Along!," "Perpetual Motion," and "The Continent...

Fiction (1963) — anthology containing L. Sprague de Camp's short story "The Galton Whistle" as well as four stories from Dynamic Science Fiction and four from...

2054-2088: "The Inspector's Teeth" A.D. 2104-2128: "Summer Wear" A.D. 2114-2140: "Finished" A.D. 2117: "The Galton Whistle" A.D. 2120: "The Animal-Cracker...

The Best of L. Sprague de Camp is a collection of writings by American science fiction and fantasy author L. Sprague de Camp, first published in hardback...