| 41. | Xenon arc lamps have also been widely used as illumination sources, but are atypical in recent work.
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| 42. | Caldwell and his grandfather projected on 35mm film and worked arc lamps which could prove to be hazardous.
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| 43. | As the arc lamp also has a very small source of light, this gave a particularly harsh lighting.
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| 44. | By the age of 21, he had designed and patented the first electric arc lamps used in Hamilton.
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| 45. | All the platforms were lit by Crompton automatic electric arc lamps, and other station areas by incandescent lamps.
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| 46. | Xenon arc lamp : this is the most common type of lamp both for continuous and flashed solar simulators.
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| 47. | These wide-angle carbon-arc lamps were invented by John Kliegl ( 1869-1959 ) and his brother Arthur ( 1872-1927 ).
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| 48. | The business was operating from the Hubert Street Bradford address in late 1895 making arc lamps and electrical instruments.
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| 49. | But I see my old friend the arc lamp is the most efficient at up to an impressive 22 %.
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| 50. | Open Arc lamps were used in the late 19th & early 20th century by many large cities for street lighting.
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