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Northcliffe, Alfred Charles William Harmsworth, Viscount

(Encyclopedia)Northcliffe, Alfred Charles William Harmsworth, Viscount, 1865–1922, British journalist, b. Ireland. He was one of the most spectacular of popular journalists and newspaper publishers in the history...

Papin, Denis

(Encyclopedia)Papin, Denis dənēˈ päpăNˈ [key], 1647–1712?, French physicist and inventor. He was an assistant of Christian Huygens and of Robert Boyle and was professor of mathematics at the Univ. of Marbur...

chain

(Encyclopedia)chain, flexible series of connected links used in various ways, especially for the transmission of motive power, for hoisting (see pulley), and for securing or fastening. Commonly, mechanical energy f...

binocular

(Encyclopedia)CE5 Binocular binocular, small optical instrument consisting of two similar telescopes mounted on a single frame so that separate images enter each of the viewer's eyes. As with a single telescope...

Ixion

(Encyclopedia)Ixion ĭkˈsēən [key], in Greek mythology, king of the Lapithes. Ixion murdered his father-in-law to avoid paying a price for his bride. When no one on earth would purify him, Zeus took Ixion to Oly...

Sprague, Frank Julian

(Encyclopedia)Sprague, Frank Julian sprāg [key], 1857–1934, American electrical engineer, b. Milford, Conn., grad. Annapolis, 1878. He was an assistant to Thomas Edison in 1883 and independently created a superi...

gyroscope

(Encyclopedia)CE5 Three-frame gyroscope gyroscope jīˈrəskōpˌ [key], symmetrical mass, usually a wheel, mounted so that it can spin about an axis in any direction. When spinning, the gyroscope has special p...

Heron of Alexandria

(Encyclopedia)Heron of Alexandria hērˈŏn [key] or Hero, mathematician and inventor. The dates of his birth and death are unknown; conjecture places them between the 2d cent. b.c. and the 3d cent. a.d. He is beli...

Patkul, Johann Reinhold von

(Encyclopedia)Patkul, Johann Reinhold von yōˈhän rīnˈhôlt fən pätˈko͝ol [key], 1660–1707, Livonian nobleman. He incurred the wrath of Charles XI of Sweden by championing the rights of the Livonian gentr...

rake

(Encyclopedia)rake, farm implement consisting of a row of straight or curved teeth of metal or wood attached to a bar or frame. It is used for gathering hay or grain into piles; for clearing fields, lawns, and yard...