Science education project (originally on ResearchGate)


Klaus Kassner

In this project, I collected a number of essays that I wrote as extended answers to questions, when I felt that the basic knowledge needed for a meaningful discussion was absent with too large a percentage of the participants, in the exchange following a ResearchGate question. Sometimes I wrote an essay also just as a detailed answer to a single contributor, but always with the general readership in mind. These contributions were pdf files prepared using LaTeX, as rigor required the use of mathematical formulas, which are most easily typeset using a dedicated typesetting system.

ResearchGate has discontinued projects, so there was no single place on their web sites where I could maintain the entire collection. The files were also posted on the answer pages of the question to which they referred, so they are still somewhere, but it is nontrivial to navigate to a particular essay. You have to know which question it was answering and you have to click through -- possibly many and very old -- pages to eventually find it.

To make these articles accessible more easily again, I collect them on my personal web pages for the public.

These essays are -- hopefully -- useful starting points to learn about a particular aspect of a scientific question and they often debunk misconceptions. In some cases, they also give the definite answer to a question, but that is not so frequent. Whenever I write a new extended answer of the essay type and post it as a pdf file, I will add an entry here to have them all collected in one place.  


  Particle in a homogeneous gravitational field (Shuler's correction)    19.08.2014
  Light deflection by the sun    02.01.2015
  Fermat's principle in general relativity    02.01.2015
  My favourite derivation of the Schwarzschild geometry    02.09.2015
  Limiting behaviour of a class of analytic functions for large arguments on the real axis    02.12.2016
  Superluminal communication scheme - explanation of what is wrong    22.07.2017
  The Hong-Ou-Mandel experiment and Bohmian mechanics    25.07.2017
  Schrödinger, Heisenberg, and interaction pictures with time dependent Hamiltonians    01.01.2018
  Quantum mechanics, macroscopic objects, and the classical limit    31.01.2018
  Why is there a collapse of the wave function?    23.02.2018
  Critical assessment of the YARK theory    03.03.2018
  The identically accelerating twins revisited    02.04.2018
  The principle of stationary action    08.09.2018
  Potentials in Newtonian mechanics    09.01.2019
  Human-readable four color map theorem proof?    03.09.2019
  About Bohmian mechanics    03.02.2021
  Revisiting real functions with constant limit at infinity. What about the limit of their derivative there?    12.09.2021
  Sagnac effect and uniform speed of light    21.08.2023
  Conventionality of simultaneity and velocity measurement    15.11.2023
  The Sagnac effect as a confirmation of relativity    10.12.2023
  Doppler effect, made simple    29.07.2024
  Double Doppler effect and conservation laws    11.08.2024


 

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