Writing Assignment
Period 7th
September 16, 2014
JJ Thomson
JJ Thomson’s full name is Joseph John Thomson. Thomson was born on December 18, 1856. He was born near Manchester, England. Emma Thomson was his mother and she came from a family that owned a company that made produced cotton. Joseph James Thomson was his father and he was a bookseller. Thomson’s father wanted him to become and engineer. He went to his first college at the age of 14. Later, he attended Trinity College at Cambridge with a small scholarship. Thomson started to study cathode rays in 1894. JJ Thomson discovered the electrons which are negatively charged particles. To discover the elections in the atom, JJ Thomson had to put in a lot of thought, time and hard work. Thomson did a series of experiments to test his hypothesis. In the first experiment, he tried to prove his hypothesis using the field of magnetic. There were slits in the tube and there it could measure the electrical charge. He learned that the magnet turned the charge away. In the second experiment, he used an electric field to deflect the negative charge. What he thought would be the outcome was actually the outcome and this lead to more research and experiments. In his third experiment, he worked at trying to find the nature of the particles. After lots of work he found out the mass and ratio of the particle. Later, JJ Thomson designed his own model of the atom with elections in a pool outside of the nucleus. JJ Thomson was the first to find out about the structure inside of an atom while most thought that you couldn’t get to the inside of the atom. Due to discovery that he made, he is known as one of the grandfathers of modern physics.
Work Cited http://web.visionlearning.com/events/JJThomson_Dec18_2004.htm http://www.biography.com/people/jj-thomson-40039#early-life-and-education https://explorable.com/cathode-ray-experiment https://encrypted-tbn0.gstatic.com/ https://encrypted-tbn0.gstatic.com/
Cited: http://web.visionlearning.com/events/JJThomson_Dec18_2004.htm http://www.biography.com/people/jj-thomson-40039#early-life-and-education https://explorable.com/cathode-ray-experiment https://encrypted-tbn0.gstatic.com/ https://encrypted-tbn0.gstatic.com/
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