Electromagnetism... From the Start to Finish
Involvement and Contributions
Physicist, Hans Christian Oersted, has discovered a connection between electricity and magnetism, his research has led to the conclusion that electrical currents are responsible for the creation of magnetic fields, calling it Electromagnetism. Nikola Tesla, has created the first alternating electrical current (AC). Alessandro Volta, has developed a contraption known as the Voltaic Pile, which best known as the Electric Battery. Thomas Edison, is responsible for the creation of an artificial ball of light referred to as the light-bulb. Georg Ohm began his research using the electrochemical cell, Ohm found that there is a direct proportionality between the potential difference (voltage) applied across a conductor and the resultant electric current, thus creating Ohm's Law. Joseph J. Thomson has produced research that led to the discovery of atoms known as an electrons. Benjamin Franklin created a valid theory on the existence of electrical currents. Joseph Henry, while building electromagnets, discovered the electromagnetic phenomenon of self- inductance, which is known as Electromagnetic Induction. Samuel Morse created the First Telegraph, telegraphs were both electrical and electromagnetic. And finally, Charles de Coulomb, whom is responsible for the creation of Coulomb's Law.
Hans Christian Oersted
Oersted was born in Denmark on August 14, 1777 (and died on March 9, 1851). He had very interesting life. At the age of 16 he passed the entrance exam for the University of Copenhagen. He graduated with a Ph.D. Today most awards of Ph.D. are not actually made for researching philosophy, but Hans Christian Oersted’s was. Also, his discovery of Electromagnetism happened in a lecture he was giving. Along with the discovery of Electromagnetism. Oersted discovered the element Aluminum and the unit Oersted, was named after Hans. Hans was quoted saying: "The agreement of this law with nature will be better seen by the repetition of experiments than by a long explanation.", and, "It appears, according to the reported facts, that the electric conflict is not restricted to the conducting wire, but that it has a rather extended sphere of activity around it .. the nature of the circular action is such that movements that it produces take place in directions precisely contrary to the two extremities of a given diameter. Furthermore, it seems that the circular movement, combined with the progressive movement in the direction of the length of the conjunctive wire, should form a mode of action which is exerted as a helix around this wire as an axis." His discovery was the bridge that connected Electricity and Magnetism.
Nikola Tesla was born July 10, 1856 ( and died on January 7, 1943). He did some amazing things. He gained experience in electrical engineering before emigrating to USA to work for Thomas Edison in NYC. Due to his achievements, he was given an archetypal name of "Mad Scientist". That is Amazing, he like known as a real Mad Scientist. Even though Tesla worked for Edison, they were both enemies, but they had mutual respect for one another, even thought they fought the "current wars." It wasn't actually fighting, they just argued and gave different points about the two currents, AC vs DC. He also invented the Tesla Coil and the AC Induction Motor. He said amazing things such as; "The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane." and "Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more." Without his invention the world might not as it is today, the Alternating Current is used in most things today and this is all thanks to Tesla.
Alessandro Volta was born on February 18, 1745 (and died on March 5, 1827). He had a very unique lifestyle. Volta drew his admiration from Napoleon Bonaparte, and was close to him throughout his life. He got the idea for the Voltaic Pile while dissecting a frog. He spoke 5 languages very fluently. He also discovered Methane and Contact Electricity. He said some very amazing things; "The language of experiment is more authoritative than any reasoning: facts can destroy our ratiocination—not vice versa.", and,"...each metal has a certain power, which is different from metal to metal, of setting the electric fluid in motion..." He gave the world a way for it to store the energy that is produce by many ways, like later in the years they would be used for storing electricity made by, solar energy, hydro- energy, wind turbine created energy, all energy needs to be stored for later use.
Thomas Edison was born on February 11, 1847 (and died on October 18, 1931). Throughout his career as an inventor, Edison accomplished many unique things. He invented the Phonograph and the Motion Picture Camera. He saved the Station Agent's son from a moving train, and earned his first job. His father bribed him to read a book, instead of working on experiments. He loved Morse Code so much that he proposed in Morse Code, and even nicknamed his children, Dot and Dash. The saying goes that, Wise people say Wise words. This is what Edison said; "Be brave as your fathers before you. Have faith and go forward" and "I have not failed. I've just found 10,000 ways that won't work.", and,"Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time." He brought the light into our lives. His light bulb is used everywhere today to light up even the smallest crevasse
Georg Ohm was born on March 16, 1789 (and died on July 6, 1854). Ohm had a very interesting life. Besides Ohm's law, he also created Ohm's Acoustic Law and Ohm's Phase Law. By 1840 Molecular Physics was published by Ohm he noted in the preface that he intended to write a second, third and God willing a fourth volume. In 1827 Georg Ohm published his book The Galvanic Circuit Investigated Mathematically. The college was not happy with his work and he resigned. The Ohm's Law first came from Cavendish's work but Cavendish didn't publish his work and Ohm did. The man was known to have said; "Resistance is Futile" and "The history of the world is none other than the progress of the consciousness of freedom.” Ohm's laws gives us a better understanding about Electrical Physics and it has helped many scientists to create great things using this law.
Joseph J. Thomson
Joseph J. Thomson was born on December 18, 1856 (and died on August 30, 1940). A few interesting facts about Joseph's life were: He enrolled in Trinity college at the age of fourteen! He and his son had gotten the Nobel Peace Prize. In 1888 he published Applications of dynamics to physics and chemistry in which he stated the mathematics of the transformation of energy. He invented the Plum Pudding Model and discovered isotopes. He can be quoted to have said: “The difficulties which would have to be overcome to make several of the preceding experiments conclusive are so great as to be almost insurmountable.” and "The electron; may it never be of any use to anybody." His foundings give us the basic structure for Chemistry, Physics, and Biology, the Atom's subatomic particle, the electron.
Benjamin Franklin was born on January 17, 1706 (and died on April 17, 1790). Some unique facts about Franklin would be: He was a volunteer Fireman who wrote articles on fire safety. He could speak 5 different languages, and he was always trying to find ways of improving himself. During his experiments, he almost got killed twice. He invented many different things including, Lightning Rod, Franklin Stove, and Odometer. A few quotes from him are; "Tell me and I forget. Teach me and I remember. Involve me and I learn." and "An investment in knowledge pays the best interest." He has probably been one of the most "hands on" scientist ever. His work is very astute. He is improving himself and society around him.
Joseph Henry was born on December 17, 1797 (and died on May 13, 1878). He lead a unique lifestyle. As a child he wanted to become a professional actor. The SI unit of inductance, the Henry, is named after him. He was pioneering electrical engineer who discovered the electrical properties that formed the basis for the telegraph machines. He invented the Electric Doorbell and the Electric Relay. He can be quoted to have said; "The person who thinks there can be any real conflict between science and religion must be either very young in science or very ignorant in religion." and "The seeds of great discoveries are constantly floating around us, but they only take root in minds well-prepared to receive them." His work on Electromagnetic Induction has helped the scientist with figuring out the production of force over a conductor.
Samuel Morse was born on April 27, 1791 (and died on April 2, 1872). He did some amazing things. Morse had an earlier career as an accomplished painter. The death of Morse’s wife was the impetus for his work on the telegraph. A teenage girl selected the words for the first official telegraph message. He invented the First Practical Means of Photography and the Morse Code. He can be quoted to have said; "What God hath wrought?" and "Every child has a dream, to pursue the dream is in every child's hand to make it reality. One's invention is another's tool..." He built the basis for long distance communication. The only reason we can talk to people across the world, all thanks to Morse.
Charles de Coulomb
Charles de Coulomb was born on June 14, 1736 (and died on August 23, 1806). A few cool facts about Coulomb were: He was put in charge, and oversaw, the construction of the fort, Fort Bourbon, in his early career, worked in structural design and soil mechanics, and had a unit of electrical charge named after him (the coulomb). Besides Coulomb's Law, he invented the Torsion Balance and the Unit of Charge, the Coulomb was named after him. Some quotes from Charles are: "On graduating from school, a studious young man who would withstand the tedium and monotony of his duties has no choice but to lose himself in some branch of science or literature completely irrelevant to his assignment.", and,"The sciences are monuments devoted to the public good; each citizen owes to them a tribute proportional to his talents. While the great men, carried to the summit of the edifice, draw and put up the higher floors, the ordinary artists scattered in the lower floors, or hidden in the obscurity of the foundations, must only seek to improve what cleverer hands have created." His law was very essential to the development of the theory of electromagnetism, he laid down the basis.
Battle of the Currents
Before one was deemed "better", supporters of the two electrical preferences, AC and DC, debated why they had the better choice. Supporters of AC currents could say that their electrical currents produced energy more efficiently, could transport more massive amounts of electricity, and was even cheaper. While supporters of DC currents, on the other hand, were able to argue that their methods were safer, could be more useful on smaller scale, and offer more flexibility when it comes to speed of electrical current flow.
Where It Came From!!!
-Hans Christian Oersted
-Charles de Coulomb