Electricity distribution

1. What is the forbidden gap in semiconductors? One electron volt (eV) 2. At absolute zero temperature, semiconductor behaves as Insulator 3. Define electrical conductivity. Electrical conductivity is the ability to conduct an electric current. 4. What are the two types of charge carriers in semiconductors? Electrons and holes are the two types of charge carriers in semiconductor. 5. Define charge carrier. Charge carrier is a particle, which carries electric charge or electric current from one…

2 Copper is a good conductor of electricity. Copper is good conductor of electricity because it contains free electrons. Copper has one free electron per atom. The free electron concentration in copper is 8.5 x 1028 per m3. The electrons start flowing as soon as the switch is closed. But the electrons themselves travel much more slowly. So how does the current come on everywhere as soon as the switch is closed? It is because the free electrons are already spread throughout the wire. As soon as…

Thomas Alva Edison was born on February 11, 1847 in Milan, Ohio. He was the last of 7 children. He moved to Michigan when he was 7 years old. As a child, he was extremely curious. He was so intrigued by things, that he once sat on a goose egg, just to see if it would hatch. He also set fire to a barn, to see what would happen. Although he was not well educated, he only completed 3 months of school, he was extremely smart and had the desire to learn. He was always very distracted and could never…

“ Worst. Idea. Ever.” of chapter 1 is telling us what we hear on the radio, watch on the TV, see on the newspaper is not really true. Some time we need to look deep inside and think deeper into it to find out the fact. As many a human believe that Edison is the one who invents the light bulb, but in the chapter 1 states “Humphrey Davy invented it forty-five years before Edison was even born”. I believe every one after reading this chapter will be surprise just like me. And we may be asking:…

he was very interested in mechanics and electricity. As he grew up, he was mesmerized with the hand-cranked telephone Thomas Edison had made and hand-cranked phonograph that Alexander Graham Bell had made. They were his new heroes. Trying for a better life, the Farnsworth family moved from Utah to Idaho. Philo had observed that his parent’s home was wired for electricity! He also scrutinized that the attic contained magazines about magnetism, electricity, radios, and a television, an invention…

The Spirit Phone After the carnage of World War I, spiritualism was undergoing a revival, and many people hoped science could provide a means to contact lost loved ones. Edison himself was not a believer and admitted he had no idea if a spirit world even existed. Edison corresponded with British inventor Sir William Crookes, who claimed to have captured images on "spirit photographs." Edison was intrigued. Edison took the idea of the telephone and the telegraph a bit further and announced in…

What kind of car does an electrician drive? A Volkswagen (LaffGaff). To be an Electrician all you need is high school diploma, also electricians work in people's homes, on construction sites, in factories, and in electrical utility stations (Career Cruising). They may be required to bend or squat for long periods, in order to work on hard-to-reach wiring. There is always the threat of electrical shocks, but as long as proper safety procedures are followed, the number of accidents will remain…

is called "The Philadelphia Experiment". The lab itself was the study of the relationship between the electricity in the lightning and a lightning rod itself. Franklin's theory involved the lightning bolt neutralizing the total or even a piece of the charged storm cloud. The bolt would then send energy to the high lightning rod. In his experiment, the kit was in replacement of the rod. Electricity would then go through the insulated rope and safely to where he was on the ground. The technology…

Electroencephalogram (EEG) used to measure abnormalities in the brain which related to electrical activity (Fig.1). This measurement tracks and records brain wave patterns by using electrodes are placed on the scalp, and then signals go to a computer to record the results. Abnormal patterns in EEG indicate seizures and other problems [3][6]. The importance reason for using EEG is to diagnose and show seizure disorders. Also EEGs help to help to identify causes of other problems like sleep…

Tesla and Edison During the late 1890s the inventions of two great minds, Nikola Tesla and Thomas Edison, helped turn electricity from a scientific concept into a household amenity. In this paper, I will review both of these men’s lives, give an overview of their accomplishments, and go over how these accomplishments still have an impact today. Nikola Tesla was born July 10, 1856 in Smiljan, Croatia. A bright child with an almost photographic memory and an aptitude for problem-solving, Tesla…