Electric Lamp

When primitive man began to make use of the fire was soon burning discover that some substances than others. A pine knot, for example, was burned well and bright light. When placed chops noted that the fat droplets sparkled brightly in the flames.
Probably this observation came the idea of making a lamp. Stones found in a similar way to dishes, filled them with melted animal fat and devised a wick or wick made of moss or similar materials.
The wick was soaked in melted fat and burned with a weak flame and smoking.
The Eskimos still burning, for light, seal blubber in flat containers of stone.
The earliest lamps were to shallow dish in aceiteo burning fat. Inside the houses did not need protection from wind and rain the flame of the lamps. But when he drew the outside it was necessary to place them in containers that guarded the flame from drafts. These protective containers should have holes or windows that let light through so that the lamp continue to fulfill its purpose of lighting. Thus was born the lamp: it was a flashlight likely be removed or outdoors without being extinguished.
The fat and oil lamps were improved slowly, as they discovered better fuels. It is refined animal fat, were hunted whales for lamp oil, was used vegetable oils, like olive oil and, finally, were used in the mid-nineteenth century, oil and some of their products. Which is more widespread of these was the kerosene.
Among all available media that the man of the past he used for light perhaps none was more important than sailing. They made candles from animal fat that was put around a wick. Tallow was a fat favorites. Then he warned that burning beeswax better, but had the disadvantage of being scarce and expensive. Later he turned to the paraffin, a petroleum product. The candle was also used as light source in the headlights.