Small lighting knowledge | do you know about early arc lamp? - China lighting network

Hundreds of thousands of years, humans have been using light to lighting, until the human to know and master the regular pattern of the electricity, invented the electric light source, mankind in the history of light to enter a new stage. Electricity for lighting from carbon arc lamp. In 1802, the Russian physics professor Peter rove, the American physicist with franklin method leads to spark the inspiration to fly kites on both ends of the battery pack in the spark generated when the wire connection, can become a lasting lighting, for lighting? He found the 'arc', and think about 'if put two charcoal sticks close to each other, then came among them is very bright white or white flame, which makes carbon burn quickly or slowly, and can completely to illuminate the darkness of the big room. 'This is the earliest comments about electric lighting, marked the human by the electricity to the transformation of the light an historic step in the process. 1809 English chemist David had made a big storage appliances, using 2000 voltaic cell, the more intense and bright arc light. Peter rove and David are of a similar experiment device - this is actually a kind of new light - - - - The prototype of carbon arc arc lamp. In about 30 years later, someone with a hard and compact coke instead of charcoal, arc shining much longer. Later French science and technology personnel to a clockwork arc device, make it can automatically adjust the distance between two carbon. In this way, the first carbon arc lamp officially born. In 1876, the Russian electric technician Jacob can lodge, and the reform of the arc lamp, let two carbon stood side by side, separated by an insulating film. He also USES a device that can change the direction of the electric current, make the two root carbon alternately ACTS as the anode and cathode, such two carbon combustion rate is basically the same, the distance between the end also can remain the same. Due to the carbon erected two side by side when light like a candle, people will give it was named 'candle'. Each electric candle can continue to shine about 2 h. After several years of the 1870 s, due to the electric candle luminous efficiency higher than gaslight, 40 - 60 lm/W, electric candle once all the rage. By the French association of ge investment in manufacturing electric candle, was used as a street lamp, a city of Paris alone using thousands of electric candle, instead of the original tens of thousands of kerosene lamp on the streets. Arc lamp has opened up the advent of a new era of electric lighting, but electricity candle power consumption is big, life is short, radiation from a large number of ultraviolet ray, releasing harmful gases, maintenance of trouble. So in the coming of incandescent lamp, it was all out in the field of lighting. YanZhiXiang

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