A QED-Based Wave Theory of Light, Electrons
... emitted by the source has an amplitude to go this way and an amplitude to go that way, and where the amplitudes oppose each other no photon will go. (7) He realizes that it is absurd to ask “which way the photon goes”, yet he often finds himself thinking in those terms. He says that all the photonic ...
... emitted by the source has an amplitude to go this way and an amplitude to go that way, and where the amplitudes oppose each other no photon will go. (7) He realizes that it is absurd to ask “which way the photon goes”, yet he often finds himself thinking in those terms. He says that all the photonic ...
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... where? and how? is connected to essence. Physics arrives at this via the equations of quantum mechanics, in particular via the Schrödinger equation. The results of this theory are only probable, since the wave function provides probability and not fact. (We do not know when a radioactive nucleus wi ...
... where? and how? is connected to essence. Physics arrives at this via the equations of quantum mechanics, in particular via the Schrödinger equation. The results of this theory are only probable, since the wave function provides probability and not fact. (We do not know when a radioactive nucleus wi ...
Some Quantum Considerations II
... Which of the following statements is false? a. Longer wavelength radiation carries higher energies. b. Light can be considered to be made up of particles called photons. c. All material objects have some wave characteristics. d. Electrons can be viewed as standing waves in an atom. e. Bohr’s model o ...
... Which of the following statements is false? a. Longer wavelength radiation carries higher energies. b. Light can be considered to be made up of particles called photons. c. All material objects have some wave characteristics. d. Electrons can be viewed as standing waves in an atom. e. Bohr’s model o ...
KHS Trial 2010 Solutions
... At the end of the nineteenth century the inconsistent behaviour of cathode rays caused much debate among physicists. The following diagram shows Thomson’s original sketch of the apparatus he used to research cathode rays. ...
... At the end of the nineteenth century the inconsistent behaviour of cathode rays caused much debate among physicists. The following diagram shows Thomson’s original sketch of the apparatus he used to research cathode rays. ...
LECTURE 18
... Found how to predict and its position uncertainty x. Same for .
How about p or KE?
We could do it if p was a function of position, i.e. p=p(x) was known.
however in QM we cannot measure simultaneously x and p. Of course we
can do it in classical physics since all observables are sharp and th ...
... Found how to predict
PX408: Relativistic Quantum Mechanics
... Q15 At what energies/lengths are the following relativistic: (i) photons; (ii) electrons; (iii) protons? Q16 If light can be treated as particles, why don’t these particles collide when two beams of light are shone at each other? Q17 Using a non-relativistic approximation, estimate the threshold Z f ...
... Q15 At what energies/lengths are the following relativistic: (i) photons; (ii) electrons; (iii) protons? Q16 If light can be treated as particles, why don’t these particles collide when two beams of light are shone at each other? Q17 Using a non-relativistic approximation, estimate the threshold Z f ...
Problems
... experiences a mismatch in the refractive index, part of it is transmitted, and part reflected. So we will ask Maxwell’s equations to give us the reflection coefficient when a light beam is incident from air on a metal. If we find that this reflection coefficient is very high for visible wavelengths, ...
... experiences a mismatch in the refractive index, part of it is transmitted, and part reflected. So we will ask Maxwell’s equations to give us the reflection coefficient when a light beam is incident from air on a metal. If we find that this reflection coefficient is very high for visible wavelengths, ...
Physics 324, Fall 2001 Solutions to problem set #1 Fri. 10/12/01
... This is a fine equation. However if we tried plugging in our plane wave guess, we would find it to be a solution so long as E 2 = (p2 c2 + m2 c4 ), and equation with two solutions for the energy, q ...
... This is a fine equation. However if we tried plugging in our plane wave guess, we would find it to be a solution so long as E 2 = (p2 c2 + m2 c4 ), and equation with two solutions for the energy, q ...
Lecture 13
... Impacting electrons cause electrons in core (lowest energy) states to be knocked out. For high Z atoms, these are very tightly bound states (K shells), so require high energies (many keV) to eject them Spectrum shows sharp peaks, due to emission of photons by outer electrons falling to vacated core ...
... Impacting electrons cause electrons in core (lowest energy) states to be knocked out. For high Z atoms, these are very tightly bound states (K shells), so require high energies (many keV) to eject them Spectrum shows sharp peaks, due to emission of photons by outer electrons falling to vacated core ...
Electrons in Atoms - Effingham County Schools
... The Heisenberg uncertainty principle states that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle ...
... The Heisenberg uncertainty principle states that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle ...
Many-Electron Atoms Thornton and Rex, Ch. 8
... A careful analysis involving L and S in multi-electron atoms is very complicated. Hund’s Rules (Empirical rules for filling a subshell, while minimizing the energy) 1) The total Spin should be maximized (without violating Pauli Exclusion Principle). 2) Without violating Rule 1, the Orbital Angular m ...
... A careful analysis involving L and S in multi-electron atoms is very complicated. Hund’s Rules (Empirical rules for filling a subshell, while minimizing the energy) 1) The total Spin should be maximized (without violating Pauli Exclusion Principle). 2) Without violating Rule 1, the Orbital Angular m ...
