15 Questions 56 Answers 0 Followers
Questions related from Daniel Crespin
The values of the stationary energy levels of the hydrogen atom are -Ry, -Ry/4, -Ry/9, ... where Ry =13.6 eV is the Rydberg constant. At the energy level -Ry/4 there are the excited stationary...
27 February 2019 2,753 0 View
Hello to all Artificial intelligence is often mentioned as an area where corporations make large investments. It seems that they use AI in autonomous vehicles, face recognition, medicine,...
26 October 2018 1,741 4 View
I Do Understand Quantum Mechanics It has been stated that "nobody understands Quantum Mechanics". That is no longer the case. Everyone in Researchgate.net is invited to look at the just created...
23 May 2018 1,117 69 View
Experimentally if a hydrogen gas is at high pressure the spectrum is continuous. Thus the discrete spectrum is not an absolute feature of hydrogen atoms and depends on the experimental setting....
28 November 2016 1,575 12 View
In a recent paper I used a bent cylinder to illustrate the space of states for the simple pendulum. It should be a classical surface in Differential Geometry, maybe as far back as Euler or...
22 September 2016 1,474 7 View
Individual photons travel in "empty" space for very long distances maintaining (except for red shift and other subtle effects) their wavelength, energy, momentum, and do not disperse or...
03 May 2016 6,848 16 View
A 14-hour exposure by the Hubble Space Telescope provided a recently released picture by NASA/ESA. It shows galaxies distant at 14 billion light years. Is this a consistent possibility? For...
20 April 2014 4,123 6 View
Reading the opening post of a software...
13 April 2014 9,831 5 View
Bill Gates made the following statement "If you invent a breakthrough in artificial intelligence, so machines can learn, that is worth 10 Microsofts." (The New York Times, March 3, 2004) Mr....
18 March 2014 9,950 3 View
The hydrogen spectral lines are organized in various series. Lyman series are the lines corresponding to transitions targeting the ground state. Most pictures dealing with hydrogen spectra and...
20 September 2012 988 3 View
The XOR problem in dimension 2 appears in most introductory books on neural networks. The problem consists four 2-dimensional binary data vectors, each with a binary output 0 or 1 according to the...
10 March 2012 2,282 8 View
Several online repositories exist that provide numerical data for machine learning problems. One of these is http://archive.ics.uci.edu/ml/index.html There you can find the Sonar, or Mines vs...
08 March 2012 9,440 2 View
The Schrödinger time dependent equation (STDE) for the hydrogen atom tells how the wave function of the bound electron moves. Since the equation generates a unitary linear group...
01 January 1970 3,180 12 View
The Schrödinger self adjoint Hamiltonian operator H correctly predicts the stationary energies and stationary states of the bound electron in a hydrogen atom. To obtain such states and energies it...
01 January 1970 4,970 19 View
The really important breakthrough in theoretical physics is that the Schrödinger Time Dependent Equation (STDE) is wrong, that it is well understood why is it wrong, and that it should be replaced...
01 January 1970 5,764 14 View
