History Of Brightness

We all are a part of an electrified world. Light bulb, particularly, profoundly revolutionized human existence. It not just helped in illuminating nights but also made human existence hospitable for an array of human activities. History of electric light, which adds to our daily convenience, bears testimony of many scientists, physicist’s efforts. Some people who took a step forward in the field were James Lindsay, Frederick Moleyns, Heinrich Göbel, Humphrey Davy and Warren Rue and Thomas Edison.

Humphrey Davy offered a miner lamp by working out on formulation for electric arc. In year 1802, he demonstrated workings of electric arc with the help of 2 wires- one attached to battery and other to the thin charcoal piece. In 1820, Warner Rue produced light bulb by using platinum coil in empty tube and passing electric current through it. But this bulb was not really commercially feasible due to costly platinum used.

Hence various scientists started the search for finding suitable filament for bulb. Soon James Joule advocated that the electric current when passed via conductor with the high resistance produces thermal energy, generating light energy. But quest for finding right filament which was practical, inexpensive, commercially feasible was still on. In 1840, Joseph Swan established earliest functional light bulb with the help of carbonized, paper filament. He also patented the bulb in year 1860. But the bulb produced dim light and was not at all long lasting. It needed a power source nearby to function all the time.

With similar technology, Sir Thomas Eliot made the bulb commercially feasible in the year 1875. He had tirelessly worked towards making light bulb better. He also introduced a bamboo filament lamp soon after working on light bulb. By using Herman Spiegel’s vacuum pump, he successfully created vacuum inside his lamp’s chamber.

Source : www.engineersgarage.com/invention-stories/light-bulb-history

A Study On Eletricity

In the modern days the people around the world cannot think of their lives without electricity. Electricity is been one of the major asset for everyday works.  Electricity is the energy produced by the nature, but it took lot of years for the humans to appreciate how electricity can be used to get things done.  It is defined as the flow of charged particles named electrons via a conductive medium.  Even though, everyone in the world are using electricity, no one can answer the query “who invented electricity” in just one word. The invention of electricity was a big history and lot of scientists took part in it. Covering the major aspects of its invention, the following section talks about the inventors of electricity.

Who Invented Electricity The story of electricity is more of a discovery than an invention. Thunderbolt and lightening have been observed and mentioned by humans since ages. However, exploitable form of electricity, which the world is using in the recent years, is output of ample number of experiments on electricity initiated right from the 600 BC. Thales of Miletus was the first scientist to recognize the existence of electric power in the nature.

Thales has first found the seeds of static electricity, by proposing a theory that, rubbing a fur would make a couple of objects attract one another. Thales was the first to produce the electric sparks, by rubbing the amber. The word “electricity” came into existence, in the year 1600, by the scientist William Gilbert. In the year 1660, Otto von Guericke invented electro static generator that generates static electricity.

The inventions made by the Guericke, derived a number of properties of electricity, in which the major are: The electricity can pass through a vacuum, in the context of electricity the materials are divided into insulators and conductors. Another scientist Robert Boyle had experimentally observed the electric forces of attraction and repulsion transmitted through vacuum, in the year 1675.

Source : readanddigest.com/who-invented-electricity/