| 31. | In the 1920s, carbon arc lamps were sold as family health products, a substitute for natural sunlight.
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| 32. | The English engineer William Duddell discovered how to make a resonant circuit using a carbon arc lamp.
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| 33. | Arc lamps use high current between two electrodes ( typically carbon rods ) and require substantial maintenance.
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| 34. | The idea of coating the tube of an arc lamp emitting in the ultraviolet with incandescent emitters.
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| 35. | These lenses have a focus of and are lit by a 2, 000 Watts xenon arc lamp.
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| 36. | The Revolution has a filament structure, as opposed to most other moving lights, which use arc lamps.
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| 37. | Ordinary LED technology does not produce the intensity and high-lumen output characteristics required to replace arc lamps.
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| 38. | One of the projects given to Tesla was to develop an arc lamp based street lighting system.
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| 39. | Carbon arc lamps consist of two carbon rod electrodes in open air, supplied by a current-limiting ballast.
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| 40. | So, it seems like this camera may only be good for shooting inanimate objects under arc lamps.
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