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Davy, Sir Humphry

(Encyclopedia)Davy, Sir Humphry, 1778–1829, English chemist and physicist. The son of a woodcarver, he received his early education at Truro and was apprenticed (1795) to a surgeon-apothecary at Penzance. While d...

Jones, Davy

(Encyclopedia)Jones, Davy: see Davy Jones.

Davy Jones

(Encyclopedia)Davy Jones, personification or spirit of the sea. The name is best known in the expression “Davy Jones's locker,” meaning the bottom of the sea, to which drowned sailors go. ...

Ward, Mrs. Humphry

(Encyclopedia)Ward, Mrs. Humphry, 1851–1920, English novelist, whose maiden name was Mary Augusta Arnold; granddaughter of Thomas Arnold. She was born in Tasmania but was brought to England and grew up in Oxford;...

Crockett, Davy

(Encyclopedia)Crockett, Davy (David Crockett) krŏkˈĭt [key], 1786–1836, American frontiersman, b. Limestone, near Greeneville, Tenn. After serving (1813–14) under Andrew Jackson against the Creek in the War ...

Penzance

(Encyclopedia)Penzance pĕnzănsˈ [key], town (1991 pop. 18,501), Cornwall, SW England, at the head of Mounts Bay. Penzance is a resort and a port for the Scilly Islands. It also has flour mills. Penzance Library ...

Stephenson, George

(Encyclopedia)Stephenson, George, 1781–1848, British engineer, noted as a locomotive builder. He learned to read and write in night school at the age of 18, while working in a colliery. He constructed (1814) a tr...

Dewar, Sir James

(Encyclopedia)Dewar, Sir James dyo͞oˈər [key], 1842–1923, British chemist and physicist, b. Scotland. He was professor of chemistry (from 1877) at the Royal Institution, London, and later was director of the D...

nitrous oxide

(Encyclopedia)nitrous oxide or nitrogen (I) oxide, chemical compound, N2O, a colorless gas with a sweetish taste and odor. Its density is 1.977 grams per liter at STP. It is soluble in water, alcohol, ether, and ot...

safety lamp

(Encyclopedia)safety lamp, oil lamp designed for safe use in mines and other places where flammable gases such as firedamp (see damp) may be present. Its invention (c.1816) is usually attributed to Sir Humphry Davy...