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safety lamp
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. The Davy lamp is based upon the principle that to be ignited a substance must first be heated to... Read more |
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George Stephenson
George Stephenson 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 traveling engine, or locomotive, to haul coal from mines and in 1815 built the first locomotive to use... Read more |
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damp
damp in mining, any mixture of gases in an underground mine, especially oxygen-deficient or noxious gases. The term damp probably is derived from the German dampf, meaning fog or vapor. Several distinct types of damp are recognized. Firedamp is methane and other flammable gases, often mixed... Read more |
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lamp
lamp originally a vessel for holding oil or some combustible substance that could be burned through a wick for illumination; the term has been extended to other lighting devices. Stones, shells, and other objects of suitable shape were used for burning oil in the Paleolithic period. In Egypt and... Read more |
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lighting
lighting light produced by artificial means to allow visibility in enclosures and at night. For stage lighting, see scene design and stage lighting . Early Sources of Artificial Lighting The earliest means of artificial lighting were the open fire, firebrands, and torches. The first lamp was a... Read more |
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Sir Humphry Davy
Sir Humphry Davy 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 director (1798-1801) of the laboratory of the Pneumatic Institution, Clifton, he investigated the... Read more |
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Sir Joseph Wilson Swan
Sir Joseph Wilson Swan 1828-1914, English chemist and physicist. He made an incandescent lamp using a carbon filament (1860), 20 years before Edison's lamp. Noted for important contributions to photography as well, he devised the first commercially practical process for carbon printing, introduced... Read more |
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arc
arc in electricity, highly luminous and intensely hot discharge of electricity between two electrodes. The arc was discovered early in the 19th cent. by the English scientist Sir Humphry Davy, who so named it because of its shape. An arc is characterized by a high current, low voltage, and... Read more |
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Flashlight
Flashlight Background A flashlight is a portable, battery-operated device used for illumination. A typical unit consists of one or more dry cell batteries arranged in a line inside a battery compartment that forms the handle of the light. The flow of electricity from the... Read more |
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Aladdin
Aladdin in the Arabian Nights, the name of a poor boy in China who becomes master of a magic lamp and ring; he has a palace built for him by the Slave of the Lamp, and marries the Sultan's daughter.The story first became a pantomime in England in 1788; in 1861 H. J. Byron's dramatization... Read more |
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