Electromagnetism

Maxwell and Faraday- A Brief History of Electromagnetism The field of electromagnetism was established in 1819, twelve years before Maxwell was born. Hans Christian Oersted from Denmark was the first scientist who thought of the possibility that magnetism and electricity were related. He considered such a possibility because of the observations he made during an experiment. He Placed a wire above a compass and passed a current through the wire. He noticed that the needle of compass moved when current was passing through the wire. André Ampère was greatly inspired by Oersted’s findings and worked on it to create a mathematical formula that later became Maxwell’s fourth equation of electromagnetism in the year 1821. (Peters, 2000) Around the…

that electric currents make magnetic fields. This impacted the concept of electromagnetism heavily. Before Oersted, people knew about magnetic and electrical force, but no one had thought of the combination of the two. Oersted is known for discovering electromagnetism and aluminum. Expanding on Oersted’s discovery, André-Marie Ampere discovered a wire carrying electrical current can attract or push away an additional wire. In his honor, there is an SI unit symbol of electrical current called…

University, he studied and expanded his knowledge about wires, magnetics and batteries. Vail eventually moved away from the subject and Morse turned to Leonard D. Gale at the University of the City of New York. To do so, he could open and close a circuit in a specific pattern, making a bell ring. Then, a code was written up and the receiver would decode them, according the each letter in the message. In Europe at the same time, the duo, Cooke and Wheatstone created a communication system with…

to modify a fusor so as to reduce conduction losses and allow it to reach breakeven. One such method would be to protect the grids with magnetic fields so as to prevent the particles from every coming into contacts with the grids directly (Hedditch et al.). This would greatly reduce losses due to conduction and potentially allow breakeven to occur, however as of now these ideas are only hypothetical. As a result, right now fusors are used predominately as neutron sources rather than power…

Hans Christian Oersted. They came from different family backgrounds, Faraday being from a poor family and Oersted’s father was a pharmacist. Oersted attended the University of Copenhagen at the age of 16 and eventually earned his PHD in Philosophy. Faraday, because of his families poverty and only received a basic education but was able to educated himself by reading books and attending lectures. Faraday based his discoveries from Oersted’s publications where as Oerstad used experiments.…

Davy’s Journey Towards Electromagnetism During the early 1800s, scientists made observations that were tested repeatedly and then were seen as fact. Until 1820, electricity and magnetism were believed to be separate branches on the tree of science. Once others believed that idea it became cemented in to the scientific community. However, Humphry Davy was a chemist whose determination and experimentation overturned that idea. Despite obstacles, Oersted’s and Davy‘s experiments changed his peers’…

of the nail, the shorter the nail the faster the electrics to transfer causing it to be stronger. III. Hypothesis “If more volts are given to the nail, the nail will attract more paperclips”. Explanation: Electricity currents are the source of energy to electromagnets. So by giving more volts, it gives more energy to the nail making it a stronger magnet and cause the rate of electromagnetism to increase. Which means that if there are more electrons and protons transmitting towards the nail it…

Albert Einstein said, “No object can travel faster than the speed of light.” However, will the temperature change the brightness of light? The researcher will perform the test three different times. Each test will take one glow stick from the freezer, one from the refrigerator, one in boiling water, and one from the counter and break the glow stick to make it glow. The researcher will then time the length of time it takes for the glow stick to turn off. At the conclusion of the experiment, the…

When a magnet is in motion near a non-magnetic conductor such as copper and aluminium eddy currents are induced in the conductor, causing a dissipative force called magnetic braking force, or a change in magnetic flux (figure 2). This force is dependent on: The size and shape of the conductor and magnet The strength of the magnet (μ) The conductors conductivity (σ_c) The distance between the conductive surface and the magnet (d) The velocity of the magnet (v) According to Faraday’s law,…

Magnets are one of the fundamental items in physics. This paper is meant to provide a general overview of magnets and their uses, as well as an in depth look into certain aspects of magnetism and how they relate to everyday life. Most images of a magnet come to mind as a tiny object used for hanging things on a refrigerator. But other applications are much more useful in our society in general. They are used in all kinds of speakers, in many computer parts including hard drives (for recording…