This discovery is so important because protons are what define what element an atom is. Bohr also used that discovery to find that electrons travel in orbits around the nucleus. Rutherford’s model is called the “solar system model” because in his model because the electrons orbit the nucleus almost like they are like planets orbiting the sun. Rutherford paved the way for the modern model of the atom. He also theorized the existence of the neutron which later was confirmed by James Chadwick in 1932.
However, an English physicist J.J Thomson started several different cathode ray experiments in order to find out the ration of the charge to the mass of the particles. After a series of experiments, he was able to determine this by measuring the effect of an electric field and a magnetic field on a cathode ray. After comparing this ratio to other ratios, he was able to conclude that a hydrogen atom, which is the lightest atom, was heavier than the mass of a charged particle. This was a very surprising result because nobody knew about smaller particles than an atom. Therefore, Dalton's idea of an inseparable atom was wrong; there were subatomic particles.
On 25 April 1953, a paper appeared in Nature that was to transform the life sciences from biochemistry and agriculture, to medicine and genetics. James Watson, a young American and an Englishman, Francis Crick, then at Cambridge University proposed a double helical model for the structure of DNA (deoxyribonucleic acid) molecule. (3) Crick and Watson used model building to reveal the renowned double helix of DNA, but the X-ray crystallographic data of Rosalind Franklin ( Picture 1 on the Left) and Maurice Wilkins at King's College, London, were crucial to the discovery that allowed Watson and Crick to work out the 3D structure of DNA which was found to be a double helix. (1) After the discovery of the nuclein by Swiss biochemist Friedrich Miescher
During this first of the atomic bomb scientist described as terrifying and outstanding. The explosion was as powerful as 15,000 -20,000 tons of TNT. The bomb was tested in a desert in New Mexico, where the surrounding sand in the area the explosion of it was made, turned into glass because of the extreme heat. The bomb was composed of uranium and plutonium, where they give and release a large amount of energy causing a lot of damage. The atomic bomb can make a lot of damage.
There are holes that you could step right over, not knowing it may have been the answer or may have been needed. During science you have to expect some theories to go south, or to go wrong. When a theory does not work you have to question your work and began to think of another theory to make sure you do not miss the holes you missed the first time. Barry uses this metaphor to show readers that scientists often question themselves continuously. Lastly, Barry uses word choice or diction to intensify his message.
Rutherford imagined a paired proton and electron somehow joined in one particle. One major problem with Rutherford’s “neutron theory”—not much evidence. Evidence was difficult to come by. Such a “neutron” would prove difficult to detect with 1920s equipment. Detection methods of that day mainly relied on the electrical charges of particles revealing their presence—but neutrons, having no electrical charge, would leave no trace.
Originators and History of the Model The model was developed in the mid-1970s from Dr. Gary Kielhofner's practice and master thesis. It was however first published in 1980. Gary has continued to be at the forefront when it comes to the improvement of MOHO (Forsyth & Keilhofner, 2006). He works in collaboration with other occupational therapists to develop,