How Bulb is working?

Basic Principle of working Bulb

Before the invention of light bulb, illuminating the world after the Sun went down was a messy, hazardous task. It took a bunch of candles or torches to fully light up a good sized room. There is also we using the oil lamp for getting the enough light. When the science of electricity really got going in the mid 1800s, inventers everywhere were clamoring to device a practical, affordable electrical home lighting device. In 1878 and 1879, English man Sir Joseph Swan and American Thomas Edison both has done experiments and they have searched the Bulb. Within 25 years millions of people around the world had installed the light in their homes.

The amazing thing about this historical turn of events is that the light bulb itself could hardly be simpler. The model light bulb, which has not drastically since Edison’s model, is made of only a handful of parts. In this article we will see how light bulb is working.

Basic Process of Light emitting sources

Simply, we know that light is a form of energy. It can be released by the atoms which live in the elements. The light is made up of small particles called photons. This photon has momentum and energy but not has mass. This is the best unit of light.

Here Atoms releases the light photons when electron becomes excited. Electrons are negatively charged particles which are move around the nucleus. An atom Electron has different levels of energy. The energy level of Electron depends upon the several factors, speed and distance from the atom. Electrons of different energy level occupy different orbital level. Generally, high energy electron live far from the nucleus and low energy electron live nearer to the nucleus. When something passes energy on the atom, these electrons becomes excited. These excited electrons may be temporally boosted to a higher orbital. But this excitement of electron is not live longer. The electron holds this position for a tiny fraction of seconds. After this time, the electron comes back to its original state. When it comes back to its original state, it releases energy in form of photons. In some cases it releases the light photons.

The wavelength of emitted light is depends on the energy release by the electrons. Consequently, the different sort of atom release different sort of light photon. In other word we can say that, the color of light is determined by what kind of atom is excited.     

This is the basic mechanism of all light emitting sources. The main difference between these sources is the process of exciting the atoms.
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