User:Gavin R Putland

Gavin R Putland PhD This user has a Electrical Engineering . 1st This user has a First-Class Honours degree. This user has published peer-reviewed articles in academic journals. A, B, and C This user prefers the serial comma. 24 April 2024 This user supports International Date Format (day month year) "…"! US vs. UK This user uses " logical quotation marks ". Forcing internal punctuation leads to factual errors. It's not a nationalistic style issue! This user is an Australian. G'day, mate! This user is a member of the Orthodox Church.

Sometime engineer, tutor, associate lecturer, postdoctoral research assistant, and research officer for economic NGO.  No current university affiliation.

I am the main author (but usually not the most recent editor) of the articles

• Augustin-Jean Fresnel
• Fermat's principle
• Fresnel rhomb
• Index ellipsoid
• Plane of polarization
• Total internal reflection ,

a major contributor to

• Fresnel equations ,

and a lesser contributor to

• A Dynamical Theory of the Electromagnetic Field
• Fresnel lens.

My debut on Wikisource :

• A. Fresnel (tr./ed. G. R. Putland), Letter to Arago on biaxial birefringence (21 September 1821), Wikisource, April 2021.

My contributions to Wikimedia Commons :

My derivatives/modifications of Wikimedia Commons files:

Works in progress:

• Preprint: "Cut the coordinates! (or Vector Analysis Done Fast)";
• Book:‍ Wave Foundations of Ray Optics ;
• Book:‍ Fresnel, On Light, bicentenary English edition ;
• List of English translations of works by Augustin Fresnel  (so far, I am responsible for eight of them).

Other external links:

• G. R. Putland, "No integration-by-parts, no l'Hôpital, some telescoping", in "Simplest proof of Taylor's theorem", Math Stack Exchange, February 2024;
• G. R. Putland, "Flawed proofs of the unambiguity of the determinant as defined by cofactor expansions", WikiJournal Preprints, 27 January 2024 —
• G. R. Putland, "Trigonometric proof of vector triple product expansion", Math Stack Exchange, January 2024;
• G. R. Putland, "Stirling's approximation: Can we make it obvious?", Math Stack Exchange, ed. October 2023;
• G. R. Putland, "The unreasonable effectiveness of the cathetus rule in ancient and modern optics", WikiJournal Preprints, 6 May 2023 —
• G. R. Putland, "Consistent derivation of Kirchhoff's integral theorem and diffraction formula and the Maggi-Rubinowicz transformation using high-school math",
  doi:10.5281/zenodo.7205781
  , 19 December 2022;
• G. R. Putland, "Full conjugations of nearly all French verbs in one page",
  doi:10.5281/zenodo.4662833
  , 5 April 2021 —
• H. A. Lorentz (tr. G. R. Putland), "Centenary of Augustin Fresnel" (1927),
  doi:10.5281/zenodo.3935795
  , 8 July 2020 —
• G. R. Putland (ed.), "H. A. Lorentz on the equivalence of Huygens' construction and Fermat's principle",
  doi:10.5281/zenodo.3835134
  , 20 May 2020;
• G. R. Putland, "A tautological theory of diffraction",
  doi:10.5281/zenodo.3563468
  , 5 December 2019;
• G. R. Putland, "The observation by Huygens that should have discredited Newton's 'rule' for the extraordinary refraction of calcite", 8 October 2016 – 24 May 2018  (Archived 26 June 2017 at the Wayback Machine);
• G. R. Putland, "Errata in various editions of Huygens' Treatise on Light", 7 June 2016 —

Find me on LinkedIn.