Vol 4, No 1 (2020)

Issue Description

The Cover Image is a  polarized light micrograph (magnification 600x) of crystals in quenched steel in a matrix of austenite, by Harlan H. Baker, Ames, Iowa, USA. Courtesy of Nikon Small World (7th Place, 1977 Photomicrography Competition, https://www.nikonsmallworld.com).

##issue.tableOfContents##

Table of Contents

Editorial

Peer Review - Critical Feedback or Necessary Evil?
Seth C Rasmussen
5-6
PDF
DOI: https://doi.org/10.13128/Substantia-816

Research Articles

Particular Symmetries: Group Theory of the Periodic System
Pieter Thyssen, Arnout Ceulemans
7-22
PDF
DOI: https://doi.org/10.13128/Substantia-671
Consciousness, Information, Electromagnetism and Water
Marc Henry
23-36
PDF
DOI: https://doi.org/10.13128/Substantia-645

Feature Articles

Leonardo and the Florence Canal. Sheets 126-127 of the Codex Atlanticus
Filippo Camerota
37-50
PDF
DOI: https://doi.org/10.13128/Substantia-817

Historical Articles

The Reinvention of the Nitrous Gas Eudiometrical Test in the Context of Dalton’s Law on the Multiple Proportions of Combination
Pere Grapi-Vilumara
51-61
PDF
DOI: https://doi.org/10.13128/Substantia-620
Astatine - The Elusive One
Keith Simeon Kostecka
63-70
PDF
DOI: https://doi.org/10.13128/Substantia-586
Vladimir Nikolayevich Ipatieff (1867-1952) - The Eminent Russian-American Chemist of the First Half of the XX Century
Aleksander Sztejnberg
71-81
PDF
DOI: https://doi.org/10.13128/Substantia-647
View All Issues