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Write a paragraph on lamp.
Answers
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Lamp, a device for producing illumination, consisting originally of a vessel containing a wick soaked in combustible material, and subsequently such other light-producing instruments as gas and electric lamps.
The lamp was invented at least as early as 70,000 BCE. Originally it consisted of a hollowed-out rock filled with moss or some other absorbent material that was soaked with animal fat and ignited.
The Romans introduced a new system of manufacturing terra-cotta lamps, using two molds and then joining the parts together. In metal, shapes became more complex, sometimes assuming animal or vegetable forms; very large versions for use in circuses and other public places appeared during the 1st century CE.
The development of the electric lamp at the turn of the 19th century stemmed the trend toward gas lamps, and by 1911 the conversion of gas fixtures for use with electricity had begun. Soon electricity was rapidly replacing gas for general illuminating purposes.
Modern lamps and lighting began with the invention of the incandescent electric lamp about 1870. An incandescent lamp is one in which a filament gives off light when heated to incandescence by an electric current.
By the mid-20th century the atmospheric arc lamp was used chiefly in large-wattage units for searchlights, for projectors calling for a high intensity and concentrated source, and for other special applications requiring small but powerful sources of blue and ultraviolet energy.
Answer:
Hi Cinderella
- A lamp shade's purpose is to protect the eye from the bulb's glare and to direct light from the bulb in the lamp into the room. A common form of the lampshade on a floor lamp, for example, uses cloth or paper with a loose weave to block significant amounts of light in a horizontal direction.
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