ipl-logo

History Of Atom Research Paper

776 Words4 Pages

The history of the atom
The earliest recorded theory of the atom first came about when Greek philosopher Democritus, in 460AD thought about division of sand grains. He thought that substances could be broken down until they could no longer be made smaller, he called this particle the atomos and this is where the word atom comes from.
John Dolton, in the 19th century, was the next person to develop the idea of the atom. His studies on gases he created five assumptions about atoms, some of which are still relevant today: all matter is composed of atoms, atoms cannot be created or destroyed, all atoms of the same element at identical, chemical reactions occur when atoms are rearranged, compound are formed by the combination of two or more atoms. …show more content…

the alpha particle. Ernest Rutherford tested the structure of an atom by bombarding a thin sheet of gold foil with alpha particles. Most of the alpha particles passed though the atom but some reflected or even bounced of the gold foil. Rutherford concluded that there was a positive group of particles in the centre of the atom he revised Dalton’s original model and said that atoms were made up of a positive nucleus of protons and that the electrons orbited this centre. He was unable to explain why the electrons orbited the nucleus and did not spiral inward as they lost …show more content…

two different directions to the spin. He also gave the world a rule to dictate how an electron in an atom would behave. Pauli’s exclusion principal states that, “if an electron has a certain set of quantum numbers then no other electron in that atom can have the same set of quantum numbers.”
When 1926 came Erwin Schrödinger another Austrian physicist built upon Einstein and Louis de Broglie’s idea of wave particle duality. He developed a mathematical Equation that related the pattern of electrons with that of waves, he gave his wave mechanics the symbol psi .
In 1932 James Chadwick discovered a second particle in the nucleus, he fired alpha particles at beryllium and found that neutrons were released. He revised Bohr’s model of the atom to include a representation of both protons and neutrons in the visual diagram.
Today we know that electrons orbit a nucleus made up of protons and neutrons and that the electrons can be described as both waves and

Show More
Related

  • UBT1 Task 1: Electricity

    712 Words  | 3 Pages

    1831- Using his invention the induction ring, Michael Faraday proved that electricity can be induced (made) by changes in an electromagnetic field. Faraday’s experiments about how electric current works, led to the understanding of electrical transformers and motors. This experiment became Faraday’s Law, which became one of the Maxwell Equations (Administrator, 2007). 1890 - Heinrich Hertz (1857-1894) a German physicist, laid the ground work for the vacuum tube.

    Read More

  • History Of Atom Dbq

    375 Words  | 2 Pages

    Where as, electrons are negatively charged(Doc.3).The neutron is the dense middle of the atom(Doc.3). The protons and neutrons in the atom are in the nucleus(Doc.3). However, the electrons preside in electron clouds outside the nucleus(Doc.3). To sum up, an atom is a small structure that defines what an element is and

    Read More

  • Atoms Dbq Research Paper

    297 Words  | 2 Pages

    Dmitri Mendeleyev brandished a new way to organize the Periodic Table. Therefore, the study of atoms is what brought many things that help us

    Read More

  • The Pros And Cons Of The Atomic Bomb

    1290 Words  | 6 Pages

    In 1911, scientist Ernest Rutherford discovered the nucleus of the atom. In 1934, Enrico Fermi irradiated uranium with neutrons, the uranium absorbed one neutron only to eject two, creating a chain reaction with surrounding uranium atoms, creating a nuclear chain reaction, and the first nuclear fission. In 1939, Albert Einstein writes to President Franklin D. Roosevelt, warning him of the use of uranium in a weapon. On Dec. 6, 1941 Roosevelt authorizes the Manhattan Engineering District, which will become the Manhattan Project. On July 16, 1945, the first nuclear bomb, called the Trinity Test, is detonated at Alamogordo, NM (Nuclear Weapons

    Read More

  • What Are The Pros And Cons Of The Atomic Bomb

    554 Words  | 3 Pages

    The Atomic Bomb was created through a series of tests conducted in New Mexico known as the Trinity tests or more commonly as the Manhattan Project. Countless people were amazed by the power of this massively

    Read More

  • The Manhattan Project: The Creation Of The Atomic Bomb

    626 Words  | 3 Pages

    In 1939, the scientific community, specifically German physicists had learned the secrets of splitting a uranium atom (The Manhattan Project” 2015). America realized that Adolf Hitler’s Germany obtained a massive amount of scientific talent. With their access had necessary raw materials and knowledge of the splitting of the uranium atom, they had the industrial capacity to produce an atomic bomb(“Manhattan Project”2014). The atomic bomb would eventually become the turning point of weaponry during World War II. On October 11, 1939, President Franklin D. Roosevelt received a letter from Albert Einstein about the splitting of the uranium atom which could be beneficial in developing weapons for America during World War II.

    Read More

  • Manhattan Project Research Paper

    1534 Words  | 7 Pages

    Not too long after the beginning of the project, a breakthrough occurred in the winter of 1942 (Rhodes). The physicists led by Fermi produced the world’s first controlled Nuclear Chain Reaction at the Stagg Field in the University of Chicago ("The Manhattan Project."). Encouraged by the results and progress, the U.S. government funded the project and endless progress resulted (Rhodes). Robert Oppenheimer, an American theoretical Physicist, was given the task of designing the bomb in Los Alamos Laboratory in New Mexico ("The Manhattan Project"). Responsible for the aforementioned designing and further research, Oppenheimer is accredited as the “father of the atomic bomb” (Rhodes).

    Read More

  • Why Did Harry Truman To Use The Atomic Bomb

    291 Words  | 2 Pages

    In 1938 two German scientists discovered how to split a uranium atom, which led to the creation of the atomic bomb. The U.S. used an international team of scientists, many of whom were Germans who had left their country because of the Nazis, to turn this discovery into a bomb. This was known as the Manhattan Project. They created three bombs and the first was tested successfully on July 16, 1945 in the New Mexico desert.

    Read More

  • Atomic Bomb Revealed In Ray Bradbury's Dark They Were And Golden Eyed

    395 Words  | 2 Pages

    President Franklin Roosevelt set up a research and development program for the atomic bomb, called the Manhattan Project. After gathering two billion dollars and two hundred thousand workers, the first atomic bomb was made and tested. Scientists working on the Manhattan Project were not only proud of their accomplishments, but also filled

    Read More

  • Lise Meitner: The Most Revolutionary Women In Science

    668 Words  | 3 Pages

    Protactinium currently has no uses due to its high levels of toxicity and radioactivity. Although it is used for scientific research. After this discovery Meisner continued her research which in 1923 lead to the radiationless transition known as the Auger effect. The Auger effect is when an electron in an outer shell of an atom makes a transition to a vacancy in an inner shell. The energy gained is shifted to an electron that leaves from the atom.

    Read More

  • Albert Einstein's Creation Of The Atomic Bomb

    1693 Words  | 7 Pages

    Perhaps the most famous equation ever produced by the renowned theoretical physicist Albert Einstein was his theory of special relativity, written as E=mc2. This sequence of letters and numbers is, for the most part, common knowledge. But how many people actually know what E =mc2 means, or how it has shaped our understanding of the universe? What has he done for the ever-expanding field of science?

    Read More

  • Periodic Table Research Paper

    1087 Words  | 5 Pages

    The first periodic table was first introduced to us in 1869 by a Russian scientist named Dmitri Mendeleev. Mendeleev studied chemistry at the University of St. Petersburg. Mendeleev’s table had many differences from the one we use today. His periodic table was in order by atomic mass.

    Read More

  • Lab 6: Radioactivity

    910 Words  | 4 Pages

    Physics 132 Hasbrouck 212 Cassidy Grace Lab 6: Radioactivity Abstract In this experiment we studied the strength of radioactive elements using the properties of ionizing radiation. The sources we used in this experiment are alpha, beta, and gamma radiation. We also studies the principles of the Rutherford experiments in that the nucleus was found to be very small because the forces that hold it together and also that the protons and the neutrons reside in the nucleus.

    Read More

  • The Pros And Cons Of Banning The Atomic Bomb

    862 Words  | 4 Pages

    The Atomic bomb should be eliminated and banned around the world to stop the potential destruction of our world. Julius Robert Oppenheimer, a scientist from New York, grew up in a rich household with access to the best schools. Oppenheimer was chosen by the government to work on this project and win the race towards nuclear warfare. This author states what deadly substance makes these bombs. "For example, he had moved readily from Niels Bohr 's purely scientific conjecture in the 1930s that U-235 is the fissile isotope of uranium to his own problem-solving estimate in 1941 of the amount of U-235 necessary for an effective weapon.

    Read More

  • Informative Speech On Albert Einstein

    1132 Words  | 5 Pages

    I. Introduction a. How many of you have heard of Albert Einstein? i. Albert Einstein is a German born scientists ii. Einstein was born at Ulm, in Württemberg, Germany, on March 14, 1879 b. Who was Albert Einstein/Achievements to the scientific world? i. Are you familiar with his contributions do science? 1.

    Read More

More about History Of Atom Research Paper

Open Document