Abstracts of talks for the history of science conference, One hundred
... In 1926, Albert Einstein collaborated with Emil Rupp on a set of experiments that were to probe the wave versus particle nature of light. The experiments have now been forgotten, even though their history is quite surprising: after it was established that Rupp had committed fraud, they have been era ...
... In 1926, Albert Einstein collaborated with Emil Rupp on a set of experiments that were to probe the wave versus particle nature of light. The experiments have now been forgotten, even though their history is quite surprising: after it was established that Rupp had committed fraud, they have been era ...
Section 1 Bohr`s Model of the Atom: Practice Problems
... various angles. The small but significant number deflected at wide angles indicates a concentrated nucleus. 22. How does the Bohr model explain why the absorption spectrum of hydrogen contains exactly the same wavelengths as its emission spectrum? SOLUTION: Bohr said the energy of an emitted photo ...
... various angles. The small but significant number deflected at wide angles indicates a concentrated nucleus. 22. How does the Bohr model explain why the absorption spectrum of hydrogen contains exactly the same wavelengths as its emission spectrum? SOLUTION: Bohr said the energy of an emitted photo ...
Brief presentation of the history of atomic physics
... The introduction of the energy quantum Max Planck, 1858 (Kiel) – 1947 (Göttingen) Planck’s law: Introduced in 1899/1900 the energy quantum E = hν in order to be able to derive a formula for the spectral distribution of black-body Radiation. ...
... The introduction of the energy quantum Max Planck, 1858 (Kiel) – 1947 (Göttingen) Planck’s law: Introduced in 1899/1900 the energy quantum E = hν in order to be able to derive a formula for the spectral distribution of black-body Radiation. ...
The Bohr Model
... Erwin Schrödinger helped improve our understanding of the atomic model. He combined the following concepts: (1) First, electrons are particles, but they also act like waves (remember de Broglie proposed that matter can act like a wave). ...
... Erwin Schrödinger helped improve our understanding of the atomic model. He combined the following concepts: (1) First, electrons are particles, but they also act like waves (remember de Broglie proposed that matter can act like a wave). ...
Scheme for a coherently controlled pulsed electron gun F. Robicheaux
... Recent work has focused on the study of the timedependent electron emission of highly excited alkali atoms in a strong electric field using experimental1–3 and theoretical4,5 tools. The measurements on these Rydberg atoms were performed by monitoring the time-dependent flux of electrons that are nat ...
... Recent work has focused on the study of the timedependent electron emission of highly excited alkali atoms in a strong electric field using experimental1–3 and theoretical4,5 tools. The measurements on these Rydberg atoms were performed by monitoring the time-dependent flux of electrons that are nat ...
Jeopardy Atomic Physics
... in DVD and compact disc players, to cut metals, to induce nuclear fusion reactions, to transmit telephone information along optical fibers, in checkout counter price scanners. ...
... in DVD and compact disc players, to cut metals, to induce nuclear fusion reactions, to transmit telephone information along optical fibers, in checkout counter price scanners. ...
Atomic Physics
... Atomic physics may loosely be defined as the scientific study of the structure of the atom, its energy states, and its interactions with other particles and fields. Learning Atomic Physics is important not only for understanding the physics of the atom but also the technological applications thereof ...
... Atomic physics may loosely be defined as the scientific study of the structure of the atom, its energy states, and its interactions with other particles and fields. Learning Atomic Physics is important not only for understanding the physics of the atom but also the technological applications thereof ...
2.8 M - Thierry Karsenti
... Atomic physics may loosely be defined as the scientific study of the structure of the atom, its energy states, and its interactions with other particles and fields. Learning Atomic Physics is important not only for understanding the physics of the atom but also the technological applications thereof ...
... Atomic physics may loosely be defined as the scientific study of the structure of the atom, its energy states, and its interactions with other particles and fields. Learning Atomic Physics is important not only for understanding the physics of the atom but also the technological applications thereof ...
Chapter 35 Bohr Theory of Hydrogen
... Thus the hydrogen atom is such a simple system, with known masses and known forces, that it should be a straightforward matter to make detailed predictions about the nature of the atom. We could use the orbit program of Chapter 8, replacing the gravitational force GMm/r 2 by e 2 /r 2 . We would pred ...
... Thus the hydrogen atom is such a simple system, with known masses and known forces, that it should be a straightforward matter to make detailed predictions about the nature of the atom. We could use the orbit program of Chapter 8, replacing the gravitational force GMm/r 2 by e 2 /r 2 . We would pred ...
PHYS 121 LEC,TST,TUT 0.50 Mechanics An introductory course in
... classical kinematics & dynamics, momentum, energy, force, friction, work, power, angular momentum, oscillations, fluids, viscosity. Prerequisite: MCV4U Calculus & Vectors / MHF4U Functions & Calculus Corequisite: MAT135H1/MAT137Y1/MAT157Y1 Exclusion: PHY151H1 Recommended Preparation: SPH4U Physics a ...
... classical kinematics & dynamics, momentum, energy, force, friction, work, power, angular momentum, oscillations, fluids, viscosity. Prerequisite: MCV4U Calculus & Vectors / MHF4U Functions & Calculus Corequisite: MAT135H1/MAT137Y1/MAT157Y1 Exclusion: PHY151H1 Recommended Preparation: SPH4U Physics a ...
Physics 243 Lecture Notes
... P38.1 The human eye is most sensitive to green light of wavelength 505 nm. When people are kept in the dark room until their eyes adapt to the darkness, a single photon of green light will trigger receptor cells in the rods of the retina. (a) What is the frequency of this photon? (b) How much energy ...
... P38.1 The human eye is most sensitive to green light of wavelength 505 nm. When people are kept in the dark room until their eyes adapt to the darkness, a single photon of green light will trigger receptor cells in the rods of the retina. (a) What is the frequency of this photon? (b) How much energy ...
Bose-Einstein Condensation in a gas
... The first theoretical description of Bose-Einstein condensation (BEC) in an ideal gas dates from 1924, when Einstein published his articles on the Quantum theory of an ideal gas. This theory was extended to describe the interacting Bose gas in 1947 by Bogoliubov, who introduced a mean field theory t ...
... The first theoretical description of Bose-Einstein condensation (BEC) in an ideal gas dates from 1924, when Einstein published his articles on the Quantum theory of an ideal gas. This theory was extended to describe the interacting Bose gas in 1947 by Bogoliubov, who introduced a mean field theory t ...
When Energy Conservation Seems to Fail: The Prediction of the
... this property was attributed to the nuclear electrons, serious difficulties arose both from a theoretical point of view and from an experimental point of view. Under the theoretical point of view, as was pointed out by Neville Francis Mott in his report to the Rome International Conference of Nuclea ...
... this property was attributed to the nuclear electrons, serious difficulties arose both from a theoretical point of view and from an experimental point of view. Under the theoretical point of view, as was pointed out by Neville Francis Mott in his report to the Rome International Conference of Nuclea ...
ppt
... Lecture, Readings, Discussion, HW, Lab Exam 3 is Tue. Nov. 25, 5:30-7 pm, 2103 Chamberlin (here) ...
... Lecture, Readings, Discussion, HW, Lab Exam 3 is Tue. Nov. 25, 5:30-7 pm, 2103 Chamberlin (here) ...
What is Solid State Physics? - Department of Physics and Astronomy
... Transport: Set up a potential ∇ϕ or thermal gradient ∇T and measure the electrical or heat current. The gradients can be held constant or made to oscillate at finite frequency. PHYS 624: Introduction to Solid State Physics ...
... Transport: Set up a potential ∇ϕ or thermal gradient ∇T and measure the electrical or heat current. The gradients can be held constant or made to oscillate at finite frequency. PHYS 624: Introduction to Solid State Physics ...
I. Requirements Common to All Physics Programs:
... No grade of D+ or worse is allowed in any course. No more than one C grade (i.e., C+, C, or C-) is allowed in all physics courses taken. The Physics and the overall GPA must both be at or above 3.00. The grade requirements above can be met by grades from courses retaken. However, while the above req ...
... No grade of D+ or worse is allowed in any course. No more than one C grade (i.e., C+, C, or C-) is allowed in all physics courses taken. The Physics and the overall GPA must both be at or above 3.00. The grade requirements above can be met by grades from courses retaken. However, while the above req ...
Detection and Quantized Conductance of Neutral Atoms Near a Charged... Trygve Ristroph, Anne Goodsell, J. A. Golovchenko, and Lene Vestergaard...
... An experimental study of the energy distribution of the ejected ions will also allow the possibility of angular momentum selection or identification for a captured atom and yield experimental insight into the details of the nanoscale tunneling process and the nanotube –neutral-atom interactions. The ...
... An experimental study of the energy distribution of the ejected ions will also allow the possibility of angular momentum selection or identification for a captured atom and yield experimental insight into the details of the nanoscale tunneling process and the nanotube –neutral-atom interactions. The ...
Chem-130 Test Lecture
... Quantum Effects & Photons Max Planck proposed that radiation is not continuous, but rather consists of small pieces known as quanta (a quantum). Frequencies, n, of these quanta were whole-number multiples of a fundamental frequency. Energies where ...
... Quantum Effects & Photons Max Planck proposed that radiation is not continuous, but rather consists of small pieces known as quanta (a quantum). Frequencies, n, of these quanta were whole-number multiples of a fundamental frequency. Energies where ...
E g
... •Fit this 4 points with parabola •Subtract the parabola from the experimental curve •You get the unshifted position of the lowest exciton absorption peak •Find the wavelength, corresponding to the maximum position •Calculate the energy, corresponding to this wavelength Instructor: Dr. Aleksey I. Fil ...
... •Fit this 4 points with parabola •Subtract the parabola from the experimental curve •You get the unshifted position of the lowest exciton absorption peak •Find the wavelength, corresponding to the maximum position •Calculate the energy, corresponding to this wavelength Instructor: Dr. Aleksey I. Fil ...
Dec. 5 - The atom
... match with our intuition about the real world, but it explained all the behaviors of atoms! ...
... match with our intuition about the real world, but it explained all the behaviors of atoms! ...
1AMQ, Part II Quantum Mechanics
... The Rydberg-Ritz Combination Principle is an empirical relationship which states that if n1 and n2 are any 2 lines in one series, then |n1n2| is a line in another series. ...
... The Rydberg-Ritz Combination Principle is an empirical relationship which states that if n1 and n2 are any 2 lines in one series, then |n1n2| is a line in another series. ...
1. Structure of Matter
... • As the electron moves to orbits of increasing radius, it does so in opposition to the restoring force due to the positive nucleus, and its potential energy is thereby raised. This is entirely analogous to the increase in potential energy that occurs when any mechanical system moves against a rest ...
... • As the electron moves to orbits of increasing radius, it does so in opposition to the restoring force due to the positive nucleus, and its potential energy is thereby raised. This is entirely analogous to the increase in potential energy that occurs when any mechanical system moves against a rest ...
Models of the Atom
... Bohr felt changes were needed for the Rutherford atom. Explaining how the atom changes as it absorbs and emits light. Slide 8 of 26 © Copyright Pearson Prentice Hall ...
... Bohr felt changes were needed for the Rutherford atom. Explaining how the atom changes as it absorbs and emits light. Slide 8 of 26 © Copyright Pearson Prentice Hall ...
How to Get Atoms Really, Really Cold Laser Cooling
... Lots of photons (1015 per second) What about emission? Also gives “kick”, but in random direction Over many absorption/ emission cycles, averages out ...
... Lots of photons (1015 per second) What about emission? Also gives “kick”, but in random direction Over many absorption/ emission cycles, averages out ...
James Franck
James Franck (26 August 1882 – 21 May 1964) was a German physicist who won the 1925 Nobel Prize for Physics with Gustav Hertz ""for their discovery of the laws governing the impact of an electron upon an atom"". He completed his doctorate in 1906 and his habilitation in 1911 at the Frederick William University in Berlin, where he lectured and taught until 1918, having reached the position of professor extraordinarius. He served as a volunteer in the German Army during World War I. He was seriously injured in 1917 in a gas attack and was awarded the Iron Cross 1st Class.Franck became the Head of the Physics Division of the Kaiser Wilhelm Gesellschaft for Physical Chemistry. In 1920, Franck became professor ordinarius of experimental physics and Director of the Second Institute for Experimental Physics at the University of Göttingen. While there he worked on quantum physics with Max Born, who was Director of the Institute of Theoretical Physics. His work included the Franck–Hertz experiment, an important confirmation of the Bohr model of the atom. He promoted the careers of women in physics, notably Lise Meitner, Hertha Sponer and Hilde Levi.After the NSDAP came to power in Germany in 1933, Franck resigned his post in protest against the dismissal of fellow academics. He assisted Frederick Lindemann in helping dismissed Jewish scientists find work overseas, before he left Germany in November 1933. After a year at the Niels Bohr Institute in Denmark, he moved to the United States, where he worked at Johns Hopkins University in Baltimore and then the University of Chicago. During this period he became interested in photosynthesis.Franck participated in the Manhattan Project during World War II as Director of the Chemistry Division of the Metallurgical Laboratory. He was also the chairman of the Committee on Political and Social Problems regarding the atomic bomb, which is best known for the compilation of the Franck Report, which recommended that the atomic bombs not be used on the Japanese cities without warning.