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Evolution of electric lights

Can we imagine our lives without electricity? The answer is a sure NO! Let's run through the history of the electricity and have a look at its journey. Electricity is set to have discovered in the year 1752 by Benjamin Franklin. But inventors and scientists tried to find a way to use electrical power to produce lighting. Finally in the year 1879, the American inventor Thomas Edison was able to produce a long-lasting electric light-bulb in his laboratory that has continued to light up the world since then.

Let's have a look at the evolution of electric lights from bulbs to the newest in technology LED's :

• Bulbs - An incandescent light bulb, incandescent lamp or incandescent light globe, it is an electric light which produces light by a wire filament heated to a high temperature with electric current passing through it, till it glows. The hot lighting filament is protected from oxidation with a glass or quartz bulb that is filled with inert gas or evacuated.

• Florescentlights - The next gen of lighting, afluorescent lamp or a fluorescent tube is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible white light. Light is generated when the electric current in the gas excites mercury vapor and then causes a phosphor coating on the inside of the bulb to glow. It is better than incandescent lamps since it converts electrical energy into useful light much more efficiently. The luminous efficacy of a fluorescent light bulb can exceed several times the efficacy of an incandescent bulb with comparable light output.

Light Living • CFL - A compact fluorescent lamp (CFL) is energy-saving light designed to replace the traditional incandescent lamp. The lamps use a tube which is curved or folded to fit into the space of an incandescent bulb, and compact electronic ballast in the base of the lamp. If compared to general-service incandescent lamps, they give the same amount of visible light, but use one-fifth to one-third the electric power, and last eight to fifteen times longer than the incandescent lamps.

Cieling Lamps • LED's - The latest in the market, LED (Light Emitting Diode), does not emit light in all directions. It comes to its full brightness without the need of any warm up time and their directional characteristics affect the design of lamps. The light production of a single LED is less than that of incandescent and compact fluorescent lamps. Therefore, in most applications multiple LEDs are used to form a lamp where more lighting is required.

Technology is advancing day by day and newer lighting options have taken the place of the traditional candle and lanterns.