Early Modern Physics
... • already went over kinematics • Rutherford scattering can either be off a heavier object (nuclei) change in angle but little energy loss “multiple scattering” • or off light target (electrons) where can transfer energy but little angular change (energy loss due to ionization, also produces “del ...
... • already went over kinematics • Rutherford scattering can either be off a heavier object (nuclei) change in angle but little energy loss “multiple scattering” • or off light target (electrons) where can transfer energy but little angular change (energy loss due to ionization, also produces “del ...
Quantum Numbers Practice Problems Name: AP Physics Period: 1
... 2. According to the deBroglie theory, electrons orbiting around the nucleus of an atom are waves (as well as particles). How does our understanding of electron waves change when we give up the idea of a simple orbit for an electron (like the ones that Bohr envisioned)? ...
... 2. According to the deBroglie theory, electrons orbiting around the nucleus of an atom are waves (as well as particles). How does our understanding of electron waves change when we give up the idea of a simple orbit for an electron (like the ones that Bohr envisioned)? ...
Wave Motion
... has either one curved surface or one flat surface or two curved surfaces. Lenses are either convex or concave. Convex lenses are thicker in the middle then the edges and concave are thicker at the edges then the middle. When light travels through lenses, refraction occurs. The light bends either out ...
... has either one curved surface or one flat surface or two curved surfaces. Lenses are either convex or concave. Convex lenses are thicker in the middle then the edges and concave are thicker at the edges then the middle. When light travels through lenses, refraction occurs. The light bends either out ...
The Spring 2006 Qualifying Exam, Part 1
... depend on its frequency. 3. The energy of the emitted electron varies linearly with the frequency of the light but is independent of its intensity. 4. There is a threshold frequency for photoemission that is independent of the light intensity. No photoelectrons are emitted for light with frequency l ...
... depend on its frequency. 3. The energy of the emitted electron varies linearly with the frequency of the light but is independent of its intensity. 4. There is a threshold frequency for photoemission that is independent of the light intensity. No photoelectrons are emitted for light with frequency l ...
Document
... It was impossible to explain the measured spectral emissivity distribution by the concepts and laws of classical physics. In 1900 Max Planck theoretically derived a formula, which accurately described the radiation. In order to do that, he had to suppose that electromagnetic energy could be emitted ...
... It was impossible to explain the measured spectral emissivity distribution by the concepts and laws of classical physics. In 1900 Max Planck theoretically derived a formula, which accurately described the radiation. In order to do that, he had to suppose that electromagnetic energy could be emitted ...
• Quantum physics explains the energy levels of atoms with
... which is the total number of electrons in the atom. ...
... which is the total number of electrons in the atom. ...
CHAPTER 3: The Experimental Basis of Quantum Theory
... depends on the value of the light frequency f and not on the intensity. The existence of a threshold frequency is completely inexplicable in classical theory. Classical theory would predict that for extremely low light intensities, a long time would elapse before any one electron could obtain suffic ...
... depends on the value of the light frequency f and not on the intensity. The existence of a threshold frequency is completely inexplicable in classical theory. Classical theory would predict that for extremely low light intensities, a long time would elapse before any one electron could obtain suffic ...
Quantum Mechanical Model
... sublevel - division of an energy level. Number of sublevel = value of n Ex: n = 3 # of sublevels equals 3 n = 4 # of sublevels equals 4 ...
... sublevel - division of an energy level. Number of sublevel = value of n Ex: n = 3 # of sublevels equals 3 n = 4 # of sublevels equals 4 ...
Chapter 6 * Electronic Structure of Atoms
... • Energy (light) is emitted or absorbed in discrete units (quantum) • Each metal has a different energy at when it emits electrons. At lower energy, electrons are not emitted. • Einstein used quanta to explain the photoelectric effect. Energy is proportional to frequency. E = h where h is Planck’s ...
... • Energy (light) is emitted or absorbed in discrete units (quantum) • Each metal has a different energy at when it emits electrons. At lower energy, electrons are not emitted. • Einstein used quanta to explain the photoelectric effect. Energy is proportional to frequency. E = h where h is Planck’s ...
lect1-4
... travelling with speed, c (in vacuum), predicted by Maxwell’s equations and exhibiting interference and diffraction effects. However, as we shall see, in some circumstances, the predictions of wave theory are wrong and it was the study of those cases which led to the development of the quantum theory ...
... travelling with speed, c (in vacuum), predicted by Maxwell’s equations and exhibiting interference and diffraction effects. However, as we shall see, in some circumstances, the predictions of wave theory are wrong and it was the study of those cases which led to the development of the quantum theory ...
Definitions are in Book
... 2s orbital has a certain energy, but it’s impossible for an electron to have an energy that is between these two values. 4) How do neon lights work? Once the light is plugged in and turned on, the electricity causes the electrons in neon to become ‘excited’, which means the electrons move a higher e ...
... 2s orbital has a certain energy, but it’s impossible for an electron to have an energy that is between these two values. 4) How do neon lights work? Once the light is plugged in and turned on, the electricity causes the electrons in neon to become ‘excited’, which means the electrons move a higher e ...
First lecture, 7.10.03
... If you measure momentum P... you don’t know anything about X. If you measure position X... you don’t know anything about P. But in real life, don’t I know something about each? Don’t I also know that if a car left this morning and is already in Budapest, it’s going faster than if it’s still on Währi ...
... If you measure momentum P... you don’t know anything about X. If you measure position X... you don’t know anything about P. But in real life, don’t I know something about each? Don’t I also know that if a car left this morning and is already in Budapest, it’s going faster than if it’s still on Währi ...
Crash course on Quantum Mechanics
... is the Laplace operator. For example, the quantum system of an electron subject to the Coulumb potential of a nucleus of charge Z sitting at the origin is described by (1) with U (x) = −Z/|x|. Note that the form and the role of the potential is exactly the same as in classical mechanics, but instead ...
... is the Laplace operator. For example, the quantum system of an electron subject to the Coulumb potential of a nucleus of charge Z sitting at the origin is described by (1) with U (x) = −Z/|x|. Note that the form and the role of the potential is exactly the same as in classical mechanics, but instead ...
Chapter 9a Introduction to Quantum Mechanics
... Compton scattering cannot be understood on the basis classical electromagnetic theory. On the basis of classical principles, the scattering mechanism is induced by motion of electrons in the material, caused by the incident radiation. This motion must have the same frequency as that of incident wav ...
... Compton scattering cannot be understood on the basis classical electromagnetic theory. On the basis of classical principles, the scattering mechanism is induced by motion of electrons in the material, caused by the incident radiation. This motion must have the same frequency as that of incident wav ...
Exam 1 (Chapters 1-4)
... 9. What makes a black hole "black"? 1. Its emissivity is 1.00, so it is a radiative blackbody. 2. Its gravitational attraction is so great that even light cannot escape. 3. Nobody knows, since we cannot see black holes. 10. Albert Einstein was awarded a Nobel Prize for his theoretical explanation of ...
... 9. What makes a black hole "black"? 1. Its emissivity is 1.00, so it is a radiative blackbody. 2. Its gravitational attraction is so great that even light cannot escape. 3. Nobody knows, since we cannot see black holes. 10. Albert Einstein was awarded a Nobel Prize for his theoretical explanation of ...
The Light of your Life
... • The emission is observed at longer wavelengths (red shift) for objects moving away, and at shorter ...
... • The emission is observed at longer wavelengths (red shift) for objects moving away, and at shorter ...
A Crash Course on Quantum Mechanics
... energy and therefore it can be expected that the electrons gain more energy. So, the classical theory predicts that the occurrence of photoelectric effect does not depend on the frequency, but it should depend on light intensity. So, what we have here is another phenomenon that cannot be explained b ...
... energy and therefore it can be expected that the electrons gain more energy. So, the classical theory predicts that the occurrence of photoelectric effect does not depend on the frequency, but it should depend on light intensity. So, what we have here is another phenomenon that cannot be explained b ...
Lecture 7
... Accelerating electric charges give off light and lose energy. Kinetic molecular theory says that atoms in a gas are constantly being accelerated (changing direction, changing speed in collisions). The energy given off is called thermal radiation because it depends on temperature. Classical physics s ...
... Accelerating electric charges give off light and lose energy. Kinetic molecular theory says that atoms in a gas are constantly being accelerated (changing direction, changing speed in collisions). The energy given off is called thermal radiation because it depends on temperature. Classical physics s ...
Modern Physics
... Light exhibits wave phenomena as a light wave is propagated by interchange of energy between varying electric and magnetic fields (Maxwell) Light acts like particles composed of kinetic energy and momentum when light interacts with matter Both wave and particle 1. Wave Nature Light exhibits ...
... Light exhibits wave phenomena as a light wave is propagated by interchange of energy between varying electric and magnetic fields (Maxwell) Light acts like particles composed of kinetic energy and momentum when light interacts with matter Both wave and particle 1. Wave Nature Light exhibits ...