The Relationship Between Magnetic Flux And Induced Currents

Benjamin Franklin and the Lightning Rod- In 1750 Benjamin Franklin set out to prove that lightning was electricity. Franklin constructed an iron rod with a sharpened end and grew impatient because it wasn’t conducting. He theorized that his sharp iron lightning rod did not conduct any electricity so many people used them for protection from

16. Play with the voltage slider and describe what happens to the current in the coil and the magnetic field around the coil.

Ben Franklin was a very curious and inventive thinker. He kept thinking about different ways to experiment with electricity so he came up with an experiment with only a few materials (wire,mobile kite, handkerchief,and two sticks).(”Benjamin Franklin and Electricity”) Franklin

question he got wrong he would get electrocuted. The voltage would then be raised for the next

Otherwise their static. No one believed Maxwell, and Hertz set out to prove Maxwell right. Hertz used two rods to serve as a receivers. When the applied a spark to one of the rods, he could get it to jump to the other rod. Hertz discovered how to make the electric and magnetic fields separate themselves and travel freely. ("The origins of radio, n.d." )

The kite experiment influenced by the works of other great scientists such as Isaac Newton and Joseph Addison, Franklin wrote his most important scientific work: Experiments and Observations on Electricity. The kite experiment of Benjamin Franklin was to tie a kite with a metal skeleton thread, with its lower end attached to a key. Taking advantage of a thunderstorm, he noted that, trace the comet, electricity is led from the kite to the key, charging outlet. From this, Franklin showed that the clouds were electrically charged and lightning we see are these electrical discharges. Among the inventions of Benjamin Franklin is the lightning conductor, produced from the just mentioned discovery. The lightning rod installed quickly across the country and was a commercial success

Benjamin’s experiment with his kite and key helped him to understand lightning. “Mid-eighteenth century scientists and inventors considered electricity to be Franklin’s most remarkable area of investigation and discovery” (Mary Bellis). Franklin’s experiments helped him to create the lightning rod. The lightning rod was a rod that was attached to the highest point of a house or building. The rod would have a wire attached to it that would run all the way to the ground. Lightning would strike the rod and travel along the wire into the ground. The wire connected to the ground absorbed the lightning, preventing the lightning from hitting the house or building. The lightning rod would prevent fires and electrocution. One of Benjamin Franklin’s less known

In the1740’s, one of Ben’s english correspondents gave the Library of Philadelphia an electrical machine for the whole city to use. Since they received this donation, Ben and a couple of his friends began to take interest in electricity because that machine gave such a great amount of curiosity to all philadelphians. Franklin wrote a book on his studies on electricity in 1751, this copy went through three different languages including english. One of his experiments on electricity was trying to identify the difference between thunderbolts and electricity. Ben flew a kite in a dangerous thunderstorm in france on June tenth, 1752.

He began his work on what was thought of as the electrical phenomenon in 1746, and insisted that electricity was no different to "vitreous" electricity. Franklin was the first to label them as positive and negative, as well as discovering the principal of conservation of charge. Franklin published a proposal for an experiment in 1750, where he intended to prove that lightning was electricity by flying a kite in a storm. Many scientists tested this, some electrocuted in the process, and confirmed Franklin's

His most famous invention was yet to come: the lightning rod. He found that when a small iron ball was electrified, it carried a magnetic charge. When he touched it with the tip of a pointed piece of metal, it lost the charge, but when he touched it with a blunt piece of metal, it was not nearly as effective at taking the charge away. If the metal was insulated from the ground, it would not take the charge from the ball at all. Before experimenting himself, he wrote multiple letters to the Royal Society in London describing his ideas and their implementation. The general idea of them was to have a very tall iron rod that would go above the building, that would attract the lightning, away from the buildings, into a wire that leads to the ground. This idea got the french king so excited that he ordered his scientists to proceed with the experiments. The first experiment worked wonderfully, then was repeated dozens of times all across France. Seeing the success, Benjamin Franklin decided to test it out for himself. He decided to use a kite, with a metal wire protruding from the top, and a key at the bottom of the wet string in order to be able to “draw sparks.” Eventually he got a charge to come from the key, and put it into a Leyden jar to experiment with. He found that “the sameness of electrical matter with that of lightning was completely demonstrated.” From all of this, came a fascination with electricity,

The Telegraph was Developed in the 1840s by Samuel Morse and supporters. the Telegraph changed long-separate discussion. Michael Faraday invented the electromagnet. When Morse came to see how it worked, he considered that it may be likely to send a hidden message over a wire.While a student at Yale, he had written his parents a letter how interesting he found electricity. While at Yale, Morse found when he began to develop the telegraph he had very little understanding of electricity.After scattered attempts to work with batteries, magnets, and wires. Leonard Gale helped and provided critical points to Morse's telegraph but, Gale not only pointed out mistakes in the telegraph and showed Morse how he could make a signal higher and overcome the

In 1747 Franklin began his electrical experiments with a simple object that he had received from Peter Collinson in England. He advanced a tenable theory of the Leyden jar, supported the hypothesis that lightning is an electrical phenomenon, and proposed an effective method of demonstrating this fact. His plan was published in London and

In 1752 Franklin devised another experiment to test if lighting has an electrical charge. He flied a kite carrying a pointed wire in a thunderstorm and attempted to test his theory that atmospheric lightning is an electrical phenomenon similar to the spark produced by an electrical frictional machine (Bruno 406). To

Farnsworth (T.V). The design, construction and manufacturing of useful devices and systems began with the implementation of Michael Faraday’s Law, one of the fundamental laws in electrical engineering, that states that the voltage in a circuit is proportional to the rate of change in the magnetic field through the circuit (www.livescience.com “What is Electrical Engineering?” by Jim Lucas)

Originally electricity and magnetism were thought of as two separate forces. This view changed, however, with the publication of James Clerk Maxwell's 1873Treatise on Electricity and Magnetism in which the interactions of positive and negative charges were shown to be regulated by one force. There are four main effects resulting from these interactions, all of which have been clearly demonstrated by experiments: