J.J. Thomson

In this experiment, you will have a chance to test the hypothesis that Ernest Rutherford used when determining the size of the nucleus. In his "gold foil experiment," Rutherford shot alpha particles at gold atoms. Once he realized that the alpha particles were hitting a concentrated positive mass, he developed the nuclear model of the atom. Next, he set out to determine the relative size of the nucleus compared to the rest of the atom. He reasoned that the smaller the nucleus, the less likely it was to be hit by an alpha particle. This led to a simple comparative ratio:

One of J.J. Thomson's most significant contributions to science, and thus to the study of atomic theory, was his discovery of the electron. Before the discovery of the electron, the atom was already associated with having electric charges-both positive and negative-but the idea of an electron existing as its own particle was unheard of. It was in 1897 when Thomson first conducted the beginning of his now famous experiment, in which he used a cathode ray tube to aid in his findings. A cathode ray tube, is a vacuum tube in which cathode rays, negatively charged particles, are produced at the cathode and travel through the vacuum, which is created when gas is extracted from the tube. J.J. Thomson discovered that in order to determine

He was born in Shelburne Nova Scotia, Canada on December 11, 1892. John’s parents are unlisted, but they did move to New England in their early childhood, even though they divorced soon after. He was strongly encouraged in school by the police commissioner August Vollmer. Larson went to Boston University and to the University of California, Berkeley for medical science.

Joseph W. Holley founded Albany State University in 1903, was originally built to provide elementary education for the black population. The school was also for teacher-training. Holley was inspired to start the school from reading W.E.B. DuBois’s writings in Georgia, about the poor living of blacks. He moved to Albany, Ga to start the school down in the south. The original name of the school was Albany Bible and Manual Training Institute. With Holley plans to start a school, he met Booker T. Washington who encouraged him to fall through with his plans. Into building a black school for the black community.

John J. Crittenden was the senator, born in Kentucky, who proposed the Crittenden Compromise, a proposal for a compromise between the Northern and southern States. The Crittenden Compromise proposed that there should be states that have slavery and that satisfy the southern demands but that the Missouri Compromise line should be redrawn. Although the southern states were willing to agree with this compromise, the northern states and the Republican Party were against this compromise for allowing future expansion of slavery and slave states. The Republican Party was unable to agree with this compromise since it did not solve the issue of slavery and the fugitive slave laws; the only difference this compromise provided was the reconfiguration of the Missouri Compromise line, which separated the slave and free states. John J. Crittenden was significant because his compromise was not able to be agreed upon by the South and the North; the break or the failure of this compromise further angered both sides of the United States.

According to DePra’s poem, “The electron is minus, the proton is plus,/ the neutron is neither” (Doc. 2). In other words, a neutron is neutral, the electron is negative and the proton is positive. After these discoveries, more inventions were made to help further our understanding of atoms, for instance, the the electron microscope. Electrons were discovered before Rutherford by JJ Thomas (OI). Thomas was using a cathode ray and discovered that atoms are made of smaller subatomic particles

“I’m part of the infantry,” John stated while on the phone with his recruiter after receiving his mail, “I’m not an assassin.”

James D Watson was a brilliant scientist who made important discoveries about the structure of DNA and genealogy. James was very intelligent from the beginning. He graduated from high school at the age of 15 and immediately after he enrolled at the University of Chicago. One of his teachers from Chicago said that Watson “must have been very keen”. He said this because he had given him 2 A’s, and “I don’t give very many A’s.” The famous biologist Paul, Weiss, who was James Watson’s instructor, said “Watson never took any notes in class, yet he came out top of the class at the end of the semester. “

John T. Williams born February 8th, 1932 Born in the state of New York, is one of the most popular and successful American orchestral composers of our modern age. He has won 5 Academy Awards, as well as 17 Grammys, 3 Golden Globes, two Emmys and five awards from the British Academy of Film and Television Arts. He is famous for many well known movie compositions such as Star Wars, Jaws, ET: The extra terrestrial, and even Jurassic Park, that is only naming a few out of the near 80 films he has done. He moved in 1948 with his family to Los Angeles. There he attended UCLA and studied composition privately with Mario Castelnuovo-Tedesco. He has written many different concert pieces such as symphony, sinfonietta for wind ensemble a cello concerto,

J.J. Thompson was born in Cheetham Hill, Manchester on the date December 18th 1856. His death was on August 30th 1940 in Cambridge UK at the age of 83. He was born to Emma Swindells and Joseph James Sr and had a brother named Frederick Vernon Thomson. When he became old enough he went off and fathered 2 children, a son and a daughter.

He enrolled in the Royal High School. He had to tutor himself all the way through high school. He was 15 years old when he dropped out, only finishing the first four semesters. The next year, he gained a job as a pupil teacher of speech and music at the Western House Academy at Elgin Moray, Scotland. His dad did not approve of him pursuing a career in science, but he did it anyway. His grandmother and father both had careers in science and that is why he wanted to go into that field too. He explored a natural curiosity about the world, he would gather specimens for experiments or do experiments about other things. He created his first invention when he was 12. He was working on a neighbor's mill and created a device with a combination of rotating paddles and nail brushes. This machine created a simple, de- husking machine that was used later on for workers in factories and made labor processes easier. This all led to him becoming him one of the most appreciated inventors in the

Ernest Rutherford was a New Zealand born British physicist who is famously known for “splitting the atom.” His work on the gold foil experiment contributed greatly to the model of the atom and helped develop the standard model of the atom to what we now use today. Without his contributions we would still be using the Plum Pudding model, an out dated and incorrect model, and we would have less of an understanding of how atoms form the world around us.

Born July 08 1902, J Lloyd Eaton began his own type of bibliomania during high school. During this period he started a collection devoted to pulp adventure stories. When he started medical school the collection criteria had expanded to detective stories and westerns. By the time he had established his practice, he became more focused on science fiction and fantasy. Like most bibliomaniacs, at first he was satisfied with only browsing bookstores. Gradually, this developed into working with dealers in New York and London. More interested in Pre-1920 materials, he had books from H.G Wells, Arthur Conan Doyle, H.P. Lovecraft, Frank Aubrey, and other well-known twentieth century authors. Over a period of thirty years Eaton gathered seven thousand

Sir William Harvey discovered the heart pumps blood.My client studied and experimented heart pumps blood.He discovered that veins don't carry air they flow blood.He was able to make these discoveries by giving surgey.This discovery gave us new ways of thinking.He proved his theory with mathematical data.

He proposed that under certain circumstances light could be considered a particles. He also hypothesized that the energy carried by a photon is depositional to the frequency of radiation. The formula E= HU proves this. Virtually no one accepted this theory but thought differently when Robert Andrews Millikan proved it.