There are two contrasting views that light either consists of particles or waves. Light is a perplexing phenomenon puzzled by Ancient Greeks and scientists for years. Even Issac Newton developed incorrect theories on light‚ when he was the inventor and genius behind physics. It has been proved that light can be both a particle and a wave. Human eyes collect light that is reflected from a source. For example‚ the light from a pencil comes from the source of light in the sun and travels to the pencil
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Metallic Components Introduction: Spectroscopy is the study of the electromagnetic radiation emitted or absorbed by the atoms and molecules. A photon in short is light. Atoms produce light by putting energy in‚ the electron then becomes excited and goes up an energy level‚ the electron then falls back down to its ground state‚ and out comes a photon (light). The electromagnetic spectrum contains color that we can and cannot see. The color blue has the highest energy with shorter wavelengths and
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There are a lot of photon interactions throughout the radiologic field. These are produced when matter and excited electrons interact with each other at the same level. The photons are able to penetrate through matter without a big interaction due to the energy being absorbed in matter. The photons in this interaction are the x-ray and gamma photons. Their lives are ended when they give off their energy to an electron in need. This interaction along with the other interactions are very important
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Physics Final Exam revision c 4/8/15 Directions: It is important that you provide answers in your own words. Please focus only on information from the text/eBook to create your own solutions. Please do not use direct information from an outside source (especially copying and pasting from an “answer” website). Use of direct information from an outside source is against school policy. All answers will be checked for plagiarism. Instances of plagiarism can result in probation or possible
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Objectives: • To be able to explain how the photoelectric effect experiment works and why a photon model of light is necessary to explain the results. • To study the effect of intensity of light on photoelectric experiment. • To estimate the Planck’s constant‚ h through the simulation. • To be determine how to calculate the wavelength of light‚ the work function of the metal‚ or the stopping potential‚ if given the other two. Beginning with the plate made of sodium. Keep all the parameters
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UNIT 1 Modern Physics 1.1 CLASSICAL PHYSICS Newtons laws of motion are the basis of the most elementary principles of classical physics. Equations based on these laws are the simplest and they are suitable for solution of simple dynamical problems‚ such as the motion of macroscopic bodies‚ Lagranges equations‚ Hamiltons equations and Hamiltons principle are also fundamental principles of classical mechanics‚ because they are consistent with each other and with Newtons laws of
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[1] c. Using the Balmer-Rydberg equation‚ at what value of n does the red line (wavelength = 656.3 nm) in the Balmer series of the hydrogen emission spectrum occur. [5] 2. Calculate the wavelength of the following: a. A photon of energy 2.89 x 10-19 J [2] b. An electron travelling at 1/5 of the speed of light [3] c. A 70 kg man running a 100 m sprint in 9.84 s. [3] i. In parts b. and c.‚ how does the wavelength compare to the region
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Drion Shkreli Alchemy to Astrophysics Professor Efthimiades 12/11/2012 Quantum Mechanics Homework 1. Principles of Quantum Mechanics a. Particles have multiple virtual motions and each motion is accompanied by a wave. The strength of the total particle wave at each point corresponds to the probability that the particle may be found there. Applying this principle we can explain all kinds of phenomena‚ from the properties of atoms and radioactivity to light reflection. 2. Electron Double
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release some energy – which it does in the form of a photon. The energy level of this photon corresponds to how far the electron dropped between orbitals. So when a photon collides with another atom‚ the energy in the photon sometimes gets absorbed and boosts an electron in that atom to a higher level‚ but only if the amount of energy in the photon (from the 1st electrons drop) matches the energy required to boost the 2nd electron. Otherwise‚ the photon will not shift electrons between orbitals. That
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scattering of a photon. It was discovered by Sir Chandrasekhara Venkata Raman and Kariamanickam Srinivasa Krishnan in liquids‚[1] and by Grigory Landsberg and Leonid Mandelstam in crystals.[2][3] When light is scattered from an atom or molecule‚ most photons are elastically scattered (Rayleigh scattering)‚ such that the scattered photons have the same energy (frequency) and wavelength as the incident photons. However‚ a small fraction of the scattered light (approximately 1 in 10 million photons) is scattered
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