Transcript - the Cassiopeia Project
... Yet the electron couldn’t be in an orbit circling the nucleus either. Circular motion requires constant acceleration of the circling body to keep it from flying away. But the electron has charge and charged particles radiate light when they are accelerating. So an electron in a circular orbit would ...
... Yet the electron couldn’t be in an orbit circling the nucleus either. Circular motion requires constant acceleration of the circling body to keep it from flying away. But the electron has charge and charged particles radiate light when they are accelerating. So an electron in a circular orbit would ...
Gamma Decay Supplement - Inside Mines
... Nuclei that are in an excited state generally decay via the emission of a γ ray or through internal electron conversion to decrease the energy of the nucleus. The transitions can occur between two excited states or an excited state and the ground state. This decrease in energy does not change the is ...
... Nuclei that are in an excited state generally decay via the emission of a γ ray or through internal electron conversion to decrease the energy of the nucleus. The transitions can occur between two excited states or an excited state and the ground state. This decrease in energy does not change the is ...
Quantum and Atomic Physics
... 26. The following statement: “In order to understand a given experiment, we must use either the wave or particle theory, but not both” is called? (A) Wave theory of light (B) Particle theory of light (C) Principle of complementarity (D) Wave theory of matter 27. Electrons are accelerated to a maximu ...
... 26. The following statement: “In order to understand a given experiment, we must use either the wave or particle theory, but not both” is called? (A) Wave theory of light (B) Particle theory of light (C) Principle of complementarity (D) Wave theory of matter 27. Electrons are accelerated to a maximu ...
Compton Effect and Spectral Lines
... 1) A photon of initial energy 5.8 103 eV is deflected by 130 in a collision with a free electron, which is initially at rest. What is the wavelength of the scattered photon? What energy (in eV) does the electron acquire in the collision? What is the velocity of the recoil electron? 2) An electron ...
... 1) A photon of initial energy 5.8 103 eV is deflected by 130 in a collision with a free electron, which is initially at rest. What is the wavelength of the scattered photon? What energy (in eV) does the electron acquire in the collision? What is the velocity of the recoil electron? 2) An electron ...
The Wave Nature of Light
... The Nature of Energy • The wave nature of light does not explain how an object can glow when its temperature increases. • Max Planck explained it by assuming that energy comes in packets called quanta. ...
... The Nature of Energy • The wave nature of light does not explain how an object can glow when its temperature increases. • Max Planck explained it by assuming that energy comes in packets called quanta. ...
Quantum physics
... c) What are the minimum and maximum kinetic energies of the struck electrons, ignoring binding to the material they are in. a) maximum shift occurs if cos=-1 (=1800). This is usually referred to as Compton backscattering. in that case: =2h/(mec)=2x2.43x10-12=4.86x10-12 m b) minimum shift occur ...
... c) What are the minimum and maximum kinetic energies of the struck electrons, ignoring binding to the material they are in. a) maximum shift occurs if cos=-1 (=1800). This is usually referred to as Compton backscattering. in that case: =2h/(mec)=2x2.43x10-12=4.86x10-12 m b) minimum shift occur ...
Max Planck suggested that the energy of light is proportional to its
... The Discovery of the Quantum The wave model cannot account for something known as the photoelectric effect. This effect is observed when light focused on certain metals emits electrons. For each metal, there is a minimum threshold frequency of EM radiation at which the effect will occur. Replacement ...
... The Discovery of the Quantum The wave model cannot account for something known as the photoelectric effect. This effect is observed when light focused on certain metals emits electrons. For each metal, there is a minimum threshold frequency of EM radiation at which the effect will occur. Replacement ...
WORKSHEET 36: ATOMIC PROPERTIES
... 11. Explain carefully, the factor, when moving up and down groups I & II, that determines the pattern of reactivity that is observed? (2) _____________________________________________________________________________ _____________________________________________________________________________ ______ ...
... 11. Explain carefully, the factor, when moving up and down groups I & II, that determines the pattern of reactivity that is observed? (2) _____________________________________________________________________________ _____________________________________________________________________________ ______ ...
Rutherford Model 1911 - University of St Andrews
... Inadequacies of the Bohr Theory 1. Does well to describe hydrogen, but can be extended only to 1-electron atoms, i.e. hydrogen-like, with higher Z values. Can treat alkali atoms with some success, but only because they have 1 electron only outside closed shells. Fails to account for spectra of othe ...
... Inadequacies of the Bohr Theory 1. Does well to describe hydrogen, but can be extended only to 1-electron atoms, i.e. hydrogen-like, with higher Z values. Can treat alkali atoms with some success, but only because they have 1 electron only outside closed shells. Fails to account for spectra of othe ...
Particle acceleration in Supernova Remnants - CEA-Irfu
... Fit: synchrotron from a cut-off electrons power law (SRCUT) plus thermal NEI emission Normalisation of the synchrotron component fixed using the radio data Only the cut-off frequency was left free. ...
... Fit: synchrotron from a cut-off electrons power law (SRCUT) plus thermal NEI emission Normalisation of the synchrotron component fixed using the radio data Only the cut-off frequency was left free. ...
From Planck*s Constant to Quantum Mechanics
... concentrated in a minute nucleus. It was then that I had the idea of an atom with a minute massive center, carrying a charge. “ [E. Rutherford] ...
... concentrated in a minute nucleus. It was then that I had the idea of an atom with a minute massive center, carrying a charge. “ [E. Rutherford] ...
View - Rutgers Physics
... 2. Which of the following statements about the photoelectric effect is FALSE: a) The photocurrent increases with increasing light intensity above the cut off frequency. b) The cut-off frequency is independent of photon intensity. c) The maximum photoelectron kinetic energy increases with decreasing ...
... 2. Which of the following statements about the photoelectric effect is FALSE: a) The photocurrent increases with increasing light intensity above the cut off frequency. b) The cut-off frequency is independent of photon intensity. c) The maximum photoelectron kinetic energy increases with decreasing ...
Section 4-2 The Quantum Model of the Atom Problems with the Bohr
... Why did Hydrogen's electron only exist in certain specific orbits? Why couldn't the electron exist in limitless orbits at slightly different energies? Why could the model only predict the light spectrum of a single electron? A. Electrons as Waves I. If light is both a particle and a wave, why ...
... Why did Hydrogen's electron only exist in certain specific orbits? Why couldn't the electron exist in limitless orbits at slightly different energies? Why could the model only predict the light spectrum of a single electron? A. Electrons as Waves I. If light is both a particle and a wave, why ...
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L 34 Modern Physics [1]
... • In the classical picture, the electrons in atoms orbit around the nucleus just as the planets orbit around the Sun. • However, the laws of mechanics and electromagnetism predict that an orbiting electron should continually radiate electromagnetic waves, and very quickly the electron would loose al ...
... • In the classical picture, the electrons in atoms orbit around the nucleus just as the planets orbit around the Sun. • However, the laws of mechanics and electromagnetism predict that an orbiting electron should continually radiate electromagnetic waves, and very quickly the electron would loose al ...
Study Guide: Chapter 4 - the Arrangement of Electrons in Atoms
... wavelength given frequency and frequency given wavelength (MEMORIZE FORMULA) – work a few practice problems 2. Understand the relationship between energy of light and its frequency; Know how to calculate the energy of light given its frequency, and the frequency given its energy (MEMORIZE FORMULA; P ...
... wavelength given frequency and frequency given wavelength (MEMORIZE FORMULA) – work a few practice problems 2. Understand the relationship between energy of light and its frequency; Know how to calculate the energy of light given its frequency, and the frequency given its energy (MEMORIZE FORMULA; P ...
Unit 3 Review (Brinkmann) unit_3_compounds_review1
... D. the simplest ratio of the crystal lattice solid ...
... D. the simplest ratio of the crystal lattice solid ...
ppt
... momentum p = mv. If the electron and proton have the same momentum, they cannot have the same speed because of the difference in their masses. For the same reason, remembering that KE = p2/2m, they cannot have the same kinetic energy. Because the kinetic energy is the only type of energy an isolated ...
... momentum p = mv. If the electron and proton have the same momentum, they cannot have the same speed because of the difference in their masses. For the same reason, remembering that KE = p2/2m, they cannot have the same kinetic energy. Because the kinetic energy is the only type of energy an isolated ...
lecture 11 (zipped power point)
... Approximately, electrons that are eject at the cutoff frequency will not leave the surface. This amount to saying that the have got zero kinetic energy: Kmax = 0 Hence, from Kmax = hn - W0, we find that the cutoff frequency and the work function is simply related by W0 = hn0 Measurement of the cut-o ...
... Approximately, electrons that are eject at the cutoff frequency will not leave the surface. This amount to saying that the have got zero kinetic energy: Kmax = 0 Hence, from Kmax = hn - W0, we find that the cutoff frequency and the work function is simply related by W0 = hn0 Measurement of the cut-o ...
Lecture 2 EMS - San Jose State University
... Absorptance, and Reflectance • (1) Transmittance (τ) - some fraction (up to 100%) of the radiation penetrates into certain surface materials such as water and if the material is transparent and thin in one dimension, normally passes through, generally with some diminution. • (2) Absorptance (α) - so ...
... Absorptance, and Reflectance • (1) Transmittance (τ) - some fraction (up to 100%) of the radiation penetrates into certain surface materials such as water and if the material is transparent and thin in one dimension, normally passes through, generally with some diminution. • (2) Absorptance (α) - so ...
NAME PRACTICE: QUANTUM CONFIGURATIONS 1) Each of the
... ___31) N2 molecules absorb ultraviolet light but not visible light. I2 molecules absorb both visible and ultraviolet light. Which of the following statements explains the observations? 1) More energy is required to make N2 molecules vibrate than is required to make I2 molecules vibrate 2) More energ ...
... ___31) N2 molecules absorb ultraviolet light but not visible light. I2 molecules absorb both visible and ultraviolet light. Which of the following statements explains the observations? 1) More energy is required to make N2 molecules vibrate than is required to make I2 molecules vibrate 2) More energ ...
Study Guide for Exam 2_Sp12
... or understand the following concepts so that you can describe them and answer questions about them. Writing electron configurations, drawing orbital diagrams. What is meant by the s block elements, the p block elements, the d block elements, and the f block elements? Periodic trends regarding atom ...
... or understand the following concepts so that you can describe them and answer questions about them. Writing electron configurations, drawing orbital diagrams. What is meant by the s block elements, the p block elements, the d block elements, and the f block elements? Periodic trends regarding atom ...
On the Ionization Energy of the Outer Electrons of Atoms and Their
... independence of nucleus charge and the number of the electrons in the shells having the same quantum number n , may mean, for example, that electronic shells (layers) are “spatially structured”: the electrons experience something like random “migration” between nodes of a certain spatial lattice (wi ...
... independence of nucleus charge and the number of the electrons in the shells having the same quantum number n , may mean, for example, that electronic shells (layers) are “spatially structured”: the electrons experience something like random “migration” between nodes of a certain spatial lattice (wi ...
Bremsstrahlung
Bremsstrahlung (German pronunciation: [ˈbʁɛmsˌʃtʁaːlʊŋ], from bremsen ""to brake"" and Strahlung ""radiation"", i.e. ""braking radiation"" or ""deceleration radiation"") is electromagnetic radiation produced by the deceleration of a charged particle when deflected by another charged particle, typically an electron by an atomic nucleus. The moving particle loses kinetic energy, which is converted into a photon, thus satisfying the law of conservation of energy. The term is also used to refer to the process of producing the radiation. Bremsstrahlung has a continuous spectrum, which becomes more intense and whose peak intensity shifts toward higher frequencies as the change of the energy of the accelerated particles increases.Strictly speaking, braking radiation is any radiation due to the acceleration of a charged particle, which includes synchrotron radiation, cyclotron radiation, and the emission of electrons and positrons during beta decay. However, the term is frequently used in the more narrow sense of radiation from electrons (from whatever source) slowing in matter.Bremsstrahlung emitted from plasma is sometimes referred to as free/free radiation. This refers to the fact that the radiation in this case is created by charged particles that are free both before and after the deflection (acceleration) that caused the emission.