What is bulbs?
The bulb is the oldest and one of the most famous forms of electric lighting. The name is derived from the method used by light bulbs. The bulb lighting is seen from the heat radiation from the heating of the object, whether it is the sun, the thread of the bulb or the wick of the candle. Most people are familiar with bulbs in the form of bulbs that heat the tungstem fiber inside a closed glass globe. A current of electricity is sent to the bulb. This current transmits energy to tungsten atoms that are beginning to warm up. The tungram fiber is then heated to 4,532 ° F (2,500 ° C). If there was an oxygen in a closed bulb, tungsten would light, so most bulbs are filled with a mixture of nitrogen and inert gas like Argon. About 12% of this radiation is visible light. This makes ndecent light bulbs one of the least energy -efficient options, because most of the released energy is more of a heat than light.
The bulb is since the birth of the sun, but the bulb has a much shorter history. The nineteenth century recorded the beginning of the Renaissance of the bulb. Before this century, lighting from the sun or candles was, but since the middle of the eight hundred people began to experiment in creating an electric bulb. Finally, within one year apart, between 1878 and 1879, Sir Joseph Swan from the UK and Thomas Edison of the United States created bulbs that used the fiber inside to generate light. Swan's invention was the first, but Edison, who remembers the history of the act. Their designs for bulbs were almost identical and still the basis of the purple lighting used today.
Other commonly with acquainted cases of bulb are candle and sunlight. These two forms of light appear different in dyeing, because the temperature of thermal radiation releasing an object is critical for their appearance. The color is the result of the wavelength of the emitted light and the more energy the shorter waves. In the lightThe spectrum has a red longest wavelength and the smallest amount of energy, while blue or purple has the shortest wavelength and most energy. Because the sun burns almost two and a half times warmer than the tungsten fiber in the bulb or flame from a small candle, its light has more blue than red, and for this reason it seems to be whiter.