Alternating current

Resistors can also be used to provide a specific voltage for an active device such as a transistor. For a fixed temperature, the current flowing through a resistor is directly proportional to the voltage across the resistor. Formula to work out resistance is Voltage (V) = Current(I) × Resistance (R) and the SI unit is Ohms (Ω). Inside the resistor there is an insulting ceramic rod running through the middle with copper wire wrapped around the outside.…

many different contributions to society. These contributions helped to make life easier, safer, and better for those living in America at the time. One of these people to help was Nikola Tesla, who created many different inventions including alternating current systems. Nikola Tesla achieved many great things in his life through preparation and the push of his motivation. Motivation Nikola Tesla had to have a reason for inventing the things he did, a motivation that pushed him to achieve his…

Rain occurs when condensed moisture in the atmosphere falls to the ground in separate, visible drops and it provides us with another source of water and can be used to provide plants with water such as in rainforests or countryside. The hydrologic cycle allows for rain to form and pour down in different areas. Water from oceans, swamps, lakes, rivers are evaporated and turn into water vapor due to the water being heated by the sun or other means. This water vapor rises into the troposphere…

were mainly soldering, until the eighteen hundreds when acetylene was discovered and people began to use the brazing process. During the nineteen hundreds the alternating current was invented, which is used today in almost all electrical welding processes. The nineteen thirties is when modern welding processes involving the alternating current were industrialized. Since early forms of welding there has been substantial innovations in the way welding processes are used, for example many factories…

Inventor (George Westinghouse) ME 333 Dr.Bednarz Group 12 Raid Dinh Khaled Aljulaud Adham Alsharari Faisal Alqurashi Inventions: Hydroelectric Power at Niagara Falls Transformers Gas Shock Absorbers Improved Incandescent Light Bulb Table of Contents 1-The inventor: 3 1.1- History and Inventions 3 1.2- Awards and Honors: 4 2- Hydroelectric Power at Niagara Falls: (1893-1899) 5 3- Transformer 6 4- Gas shock absorber: 8 5- Improved Incandescent light bulb: 8 6- References: 9…

life than single parents. Also, adolescents who live with one parents reported significantly more psychiatric symptoms such as depression and anxiety then those that live with two parents. The authors concluded that living with both parents or alternating between homes of divorced parents is more beneficial to the child’s well-being unless there is conflict or violence in the home. When considering education level it was determined that there was no educational difference between parents who…

I found the story of John Harrison to be quite sad. He spent his lifetime trying to solve the problem of longitude only to be rejected time after again by people that most likely didn't even understand his constructions. Even after Harrison had finally finished the pocket watch that was capable of telling time more accurate than any other at its time, others were still unwilling to accept the possibility that it could solve the problem. I think that this was much more common in the past due to…

lead to further research. In the 1830’s, an English scientist named Michel Faraday was credited with the discovery of induced currents and the practical behind it. He first wrapped a copper wire around an iron ring. On one side of the ring, there was a battery with a switch. On the opposite side, there was a galvanometer. He noticed a strange pattern in variations in currents. This evolved into further experimentation with magnetic fields. He used a coil of copper with a galvanometer attached…

Cause and Effect: Thomas Alva Edison (Thomas) Hook I am often thought of as the one of the greatest inventors who ever lived. I am Thomas Alva edison Background info I was born February 11,1847 in Milan Ohio. I was the youngest of the seven children of Samuel Ogden Edison and Nancy matthews Elliott. My father was a activist from Canada. My mother was an accomplished school teacher and a major influence on my life. In 1878, i worked on a way to replace the gaslight and candle light on…

Tesla desired to meet and hopefully work for him. He left for America with dreams, ideas, and four cents in his pocket. Finally able to meet the Great Edison, he eagerly told him about his alternating current motor. Edison was infuriated by the idea, for his company and reputation was built on a direct current model. He hired Tesla anyway. Edison made Tesla an enticing offer of fifty thousand dollars if he could fix the problems with Edison’s generators. When Tesla resolved the problem…