This website uses cookies to ensure you have the best experience. Learn more

The Structure Of The Atom. Rutherford's Experiment

583 words - 2 pages

In the year 1898 Thomson created the idea of atom as the positive charged ball in which there are negative charges placed - the "plum cake" model. So summing up whole a atom were to be neutral theIn the years 1909-1911 Ernest Rutherford and his students - Hans Geiger (1882-1945) and Ernest Marsden conducted some experiments to search the problem of alpha particles scattering by the thin gold-leaf. Rutherford knew that the particles contain the 2e charge. The experiment caused the creation of the new model of atom - the planetary model.Rutherford suggested to hit the gold-leaf (picture no. 1) with fast alpha particles from the source 214Po. (The source R was in the lead lining F). The particles felt from the source on the gold-leaf E and were observed by the microscope M. The whole experiment was in the metal lining A and was covered with the glass plate P. The instrument was attached to the footing B. The gold leaf was about 5*10-7 meter thick. The scientist knew that reckoning the scattering angle could say much about the structure of atoms of the gold-leaf.Rutherford made a theoretical analysis of angles of scattering in accordance with Thomson's theory of atom and in accordance with his own theory. Rutherford assumed that the charge of the nucleus was concentrated at its centre and devised a formula for how many particles would be deflected in each direction. The results matched this formula extremely well - lending support to Rutherford's model. Then his theoretic calculations he compared with the experiment result. Alpha particles going through atom created in accordance with the "plum cake" model wouldn't be strong abnegated because the electric field in that atom wouldn't be strong. In the model created...

Find Another Essay On The Structure of the Atom. Rutherford's Experiment

History of the atom nickel Essay

1410 words - 6 pages elements into variants he called "isotopes" or totally new elements, discovered "half-life", made initial calculations on energy released during decay.1900 Max Planckused the idea of quanta (discrete units of energy) to explain hot glowing matter.1903 Nagaoka Postulated a "Saturnian" model of the atom with flat rings of electrons revolving around a positively charged particle.1904 Abegg Discovered that inert

Analysis of the Hydrogen Atom

700 words - 3 pages Hydrogen (comes from the Greek words, hudôr (water), and gennan (generate)) is one of the simplest elements on earth. It is estimated to make up more than ninety percent of all the atoms, three quarters the mass of the universe. Hydrogen has the highest energy content of any common fuel by weight, but the lowest energy content by volume. Hydrogen is the most abundant gas and the source of all energy that we humans receive from the sun, but is

History Time line of the Atom

1590 words - 6 pages not an electron circling aroung the atomic nucleus, but rather an electron orbital (an 'electron cloud') giving the distribution of the electron wave function around the atomic nucleus.Heisenberg described the atom as a formula that was connected to the frequency of spectral lines. He also imposed by the principle that you can not predict the location of a particle as well as its velocity.Robert MillikanMillikan used a experiment called the Oil

Report on the Rutherford Model of the Atom

630 words - 3 pages its mass was concentrated. Rutherford then said that around this nucleus were negative electrons. He did not say much about the electrons, but believed they would travel around the nucleus much like the planets orbit the sun. For this reason, his model is often called the Solar System or Planetary Model. However, Rutherford's model of the atom was not supported by the laws of physics (these proposed the electrons would spiral in towards the

Greatest Technology Of The 20th Century. (I Chose The Atom)

519 words - 3 pages "There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so will abandon war forever." Although spoken in 1922, Thomas Edison's words tell ominously of what is to come. The exploitation of the atom altered the world forever, changing the nature of war

Historic development of the atom and its implications

1149 words - 5 pages The atom has been suggested as the smallest complete part of matter since the time of the ancient Greek philosophers but they did not have a clear picture of the nature of the atom or any possible structure because of limitations to their scientific knowledge. Dalton was a scientist who suggested in 1810 that the principal feature of atoms is that an element is a pure substance because it contains identical atoms. This was the first time that

The effect of the halogen atom on the rate of hydrolysis

632 words - 3 pages Effect of the halogen atom on the rate of hydrolysisAim: to find the rate at which different halogenoalkanes hydrolyse to form a sliver precipitate in silver nitrate solution.Hypothesis: I think that 1-iodobutane will be the fastest to react followed by 1- bromobutane and then by 1-chlorobutane. This is because 1-iodobutane has the lowest bond energy out of the three and I think that this will make it easier for it to react with the silver

Moral Dilemma in History: The Atom Bomb

1001 words - 5 pages Stimson grappled with its necessity even after they authorized its use on Hiroshima and Nagasaki! There are also claims that Truman had other viable alternatives to the bomb that may have prevented the unprecedented destruction wrought by the bomb. Despite the other alternatives, which included continual conventional bombing of Japan and a land invasion, the bomb was the least bloody alternative to end World War II. The atom bomb was the least immoral

The structure of memory

1799 words - 7 pages Introduction Prior research into the structure of memory have suggested that memory is comprised up from three separate stores each performing a specific and relatively inflexible function (in Passer, Smith, Holt, Bremner, Sutherland, & Vliek, 2009). That is the multi-store model, developed by Atkinson & Shiffrin (1968 in Passer et al., 2009) who claim a sensory memory store, short-term memory store (STM) and a long-term memory store (LTM

The Explorations of Structure

1642 words - 7 pages . This mindset is what inspired cinematic innovation within the post-war period— art movements such as the French New Wave and Italian neo-realism emerged. Filmmakers like Jean-Luc Godard rejected the traditional conventions of cinematography, editing and structure and chose to create their own. Rooted in the Italian Neo-Realism movement in the fifties, Italian filmmaker Federico Fellini rejected the idea of realist films and sought to explore

The Ethics of the Stanford Prison Experiment

941 words - 4 pages When put into the position of complete authority over others people will show their true colors. I think that most people would like to think that they would be fair, ethical superiors. I know I would, but learning about the Stanford Prison Experiment has made me question what would really happen if I was there. Would I be the submissive prisoner, the sadistic guard, or would I stay true to myself? As Phillip Zimbardo gave the guards their

Similar Essays

The Atom Essay

1132 words - 5 pages high velocity. Many scientists of the day scorned the idea. They stuck with the age-old belief that the atom is indivisible and unchangeable.Rutherford's Gold Foil experiment was supposed to support and better prove that Thomson's model of an atom was correct. Instead, Rutherford discovered the existence of a nucleus in an atom. Rutherford found that a very few alpha particles (1 out of 8000) was deflected by more than 90°. This founding proves

The Development Of The Atom Essay

500 words - 2 pages An atom is the smallest particle of an element that retains its identity in a chemical reaction. Also each one element’s atoms are different from another element’s atoms, and each atom of the same element is identical. They can be physically mixed together or chemically combined in simple whole number ratios. Last of all, chemical reactions have occurred when the atoms are joined, separated, or rearranged, but never changed. The

The Model Of The Atom Essay

1412 words - 6 pages physics, one of the topics was Atomic and Nuclear physics. The topic was mainly about nuclear structure, radioactive decay, nuclear reactions and so on, but there was something in that topic that drew my attention, the model of the Atom. Ever since the fifth century, the understanding of the atom has evolved. The Greeks invented the idea of the atom, and they believed that it wasn’t physically divisible. Then, John Dalton revised the theory and

The Atom Essay

1478 words - 6 pages apart, then there must be a whole. The real, physical electron implied a real, physical atom:the particulate theory of matter was therefore justified for the first time convincingly byphysical experiment. They sang success at the annual Cavendish dinner.Armed with the electron, and knowing from other experiment that what was leftwhen electrons were stripped away from an atom was much more massive remainder thatwas positively charged, Thomson went on