Notes
... momentum. Pair production was also first seen during this period. An energetic photon can create an e- , e+ pair. This demonstrated (E = mc2) energy could turn into mass. Today we believe light is not simply described by analogy to a wave model or particle model. We say light has a dual nature. When ...
... momentum. Pair production was also first seen during this period. An energetic photon can create an e- , e+ pair. This demonstrated (E = mc2) energy could turn into mass. Today we believe light is not simply described by analogy to a wave model or particle model. We say light has a dual nature. When ...
Bohr vs. Correct Model of Atom
... Electrons do not circle the nucleus in little planetlike orbits. The assumptions injected into the Bohr model have no basis in physical reality. BUT the model does get some of the numbers right for SIMPLE atoms… ...
... Electrons do not circle the nucleus in little planetlike orbits. The assumptions injected into the Bohr model have no basis in physical reality. BUT the model does get some of the numbers right for SIMPLE atoms… ...
lecture 5 radiation and matter
... Photoelectric effect; Einstein mathematically demonstrates light as a particle Robert Millikan tried to disprove this model but instead, his experiments (below) confirmed it http://www.aps.org/programs/outreach/history/historicsites/millikan.cfm ...
... Photoelectric effect; Einstein mathematically demonstrates light as a particle Robert Millikan tried to disprove this model but instead, his experiments (below) confirmed it http://www.aps.org/programs/outreach/history/historicsites/millikan.cfm ...
Ch. 4: Electron Configuration
... – Uncertainty principle: It is impossible to determine simultaneously both the position and velocity of an electron. ...
... – Uncertainty principle: It is impossible to determine simultaneously both the position and velocity of an electron. ...
Quantum Physics and Human Affairs
... with the smooth, spread-out electromagnetic wave description given above. But by 1950, physicists had found a theory that could reconcile these apparent particles of light, called "photons," with the electromagnetic wave theory of light. This "quantum field theory" states that the energy of the elec ...
... with the smooth, spread-out electromagnetic wave description given above. But by 1950, physicists had found a theory that could reconcile these apparent particles of light, called "photons," with the electromagnetic wave theory of light. This "quantum field theory" states that the energy of the elec ...
June_Yong_Yang
... chromodynamics by mapping the spectrum of exotic mesons(which have never before been observed). ...
... chromodynamics by mapping the spectrum of exotic mesons(which have never before been observed). ...
Final “Intro Quantum Mechanics”
... as classical physics gives the wrong answer. This was the effect that prompted Planck to introduce his constant. (b) (T) One needs quantum mechanics to explain the structure of atoms, as classical physics gives the wrong answer. Recall the Bohr model, and how we quantized H! (c) (F) Quantum entangle ...
... as classical physics gives the wrong answer. This was the effect that prompted Planck to introduce his constant. (b) (T) One needs quantum mechanics to explain the structure of atoms, as classical physics gives the wrong answer. Recall the Bohr model, and how we quantized H! (c) (F) Quantum entangle ...
Electron Configuration
... heated in a flame. The analysis of that flame revealed that the chemical behavior is related to the arrangement of the electrons in its atom. 2. Scientists also observed that light behave somehow like the electrons. Understanding light behavior helped them in explaining how electrons behave. 3. What ...
... heated in a flame. The analysis of that flame revealed that the chemical behavior is related to the arrangement of the electrons in its atom. 2. Scientists also observed that light behave somehow like the electrons. Understanding light behavior helped them in explaining how electrons behave. 3. What ...
Slides from lecture 4.
... This makes it impossible to measure precisely the position and speed at the same time as they have been affected by the measurement itself. All we can do is measure position and speed within a certain range of uncertainty. ...
... This makes it impossible to measure precisely the position and speed at the same time as they have been affected by the measurement itself. All we can do is measure position and speed within a certain range of uncertainty. ...
Quantum electrodynamics
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.