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Insulators

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We know electricity as the most dangerous and powerful source of energy existing in nature. So to protect humans from it's contact, we need some material. A kind of material which opposes the flow of heat, light, sound and electricity is known as an insulator. In other words, these are the material which have a high value of resistance beyond few, 100 mega Ohms. So practically no flow of current occurs through these types of materials. Stephen Gray was the one to introduce conduction of electrons to the world. he also stated the different materials have different property towards conduction. When he used the metal as conductor, on the other side used silk as an insulator because it showed high resistance towards electric conduction. Later it was David Brook who altered the old style of insulator and used it for his telegraph lines during 1864 to 1867.  His insulator had a thick metal casing around blown glass, the assembly was held together with molten sulfur. Out of the tube ex...

Conductor

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            Electricity is the most powerful and heavily demanded mode of energy for all human beings in this world. According to the law of conservation of Energy states that "Energy can neither be created nor be destroyed, it can only be changed from one form to another",So to achieve this typical energy format we have to convert from other energy variants.There are many modes conversion of energy to electricity. Hydro, geothermal, nuclear, wind, waves, etc are some among them. After conversion the stage before utilization is to transfer power. So to fulfill this, a medium for transferring power has to be discovered.             We could define electricity as the study of flow of charge/electrons. So fundamental property of the medium used for transfer of power should strongly support the flow of electrons.           ...