Periodic Table |
The INTERNET Database of Periodic Tables
There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D.
Use the drop menus below to search & select from the more than 1300 Period Tables in the database:
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Periodic Tables referencing the text string "Nagayasu", listed by date:
Year: 1992 | PT id = 1045, Type = formulation misc review |
Chemical Slide Rules
The first chemical slide rules are of interest here because they are, in effect, early periodic tables. But the are more than this, as they can be used for performing chemical calculations. Writing in Bull. Hist. Chem. 12 (1992) (and here), William D. Williams of Harding University writes:
"An article by George Bodner in the Winter 1990 issue of the Bulletin described a rare chemical slide rule designed by Lewis C. Beck and Joseph Henry - their little-known Improved Scale of Chemical Equivalents. [My] paper attempts to place this slide rule in context by describing its origins, as well as some of its predecessors and successors."
Some chemical slide rules mentioned in the text:
- Chemist's Adjustable Duplex Slide Rule made by Keuffel & Esser Co., n.d., ca. 1936-1940. Here are the full instructions for use.
Nagayasu Nawa writes and provides an explanation as how Wollaston's chemical equivalents slide rules should be used:
"It is very interesting slide rule for me. Because we actually used slide rule in 1960s. There were not the electronic calculator in the world. I think it would be used as a simple slide rule of The Law of Definite Proportions by J.L. Proust 1799."
- '10 water', for example, may be hydrating water in chemical compound
- 'Chlorine' may be HClO: HCl(35) + O(10) = HClO(45), etc.
Click image to enlarge:
Thanks to Nawa for the tip!
Year: 2016 | PT id = 724, Type = formulation |
NAWA's byobu-Janet Periodic Table
NAWA, Nagayasu: A Japanese schoolteacher and periodic table designer presents a Janet form periodic table in the traditional Japanese "byobu" style:
Year: 2016 | PT id = 727, Type = formulation spiral |
Clock Face Periodic Table
In 2014 Prof. Martyn Poliakoff – of YouTube fame – showed us a working Periodic Table clock, here.
The designer of the clock, Nagayasu (a Japannese school teacher), has now provided a fuller periodic table based on the same design:
Year: 2016 | PT id = 729, Type = formulation |
Sensu or Fan Periodic Table
By NAWA, Nagayasu — A Japanese schoolteacher and periodic table designer — a "Sensu" or fan periodic table:
Year: 2017 | PT id = 747, Type = formulation |
NAWA Periodic Tables
Nagayasu Nawa - "A Japanese school teacher and periodic table designer" - has a home page showing all his designs:
Year: 2017 | PT id = 760, Type = formulation 3d misc |
Clock Prism Periodic Table, Braille Version
From the prolific Nagayasu Nawa, a Braille version of the Clock Prism periodic table:
Year: 2018 | PT id = 949, Type = formulation data misc |
Nawa's V.E.T. Periodic Table & Hourglass
Nagayasu Nawa, the prolific designer of periodic tables, here and here, has come up with an orbital filling periodic table and a corresponding hourglass animation. Nawa writes:
"I have turned the v.e.c. PT into the GIF animation that I call the electron hourglass, 1 second for each element. It takes 120 seconds from 1H to 120 Ubn. I have coloured orbital with colour derived from each shell's name, such as:
- K kiwi
- L lapis lazuli
- M mauve
- N navy
- O orange
- P purple
- Q quick silver"
Click image to enlarge.
Year: 2019 | PT id = 1014, Type = formulation spiral |
NAWA's Version of Moran's Periodic Spiral
Periodic table designer Nagayasu Nawa has put his spin on Moran's Periodic Spiral:
Year: 2020 | PT id = 1113, Type = formulation data |
Nawa Version of Maeno's Nuclear Periodic Table
Nagayasu Nawa - "A Japanese school teacher and periodic table designer" - has developed two versons of the Hagino-Maeno Nuclear Periodic Table.
Nawa writes:
"I have made two Nuclear PTs based on Hagino-Maeno (2020). I have tried to express the Nuclear PT visually by using symbols such as '〇','◇','☓' or small '〇' or '●' in a binary way so that people with colour blindness could understand it. And the other have been with the ' QUAD electronic data."
Click either of the images below to enlarge:
Year: 2020 | PT id = 1175, Type = formulation 3D |
Rainbow Periodic Table in ADOMAH Cube
From the prolific Nagayasu Nawa, a version of his Rainbow Periodic Table inside Valery Tsimmerman's glass cube:
Year: 2021 | PT id = 1196, Type = data misc |
Nawa's Rainbow Periodic Table
Nagayasu Nawa - "A Japanese school teacher and periodic table designer" - has developed a Rainbow Periodic Table that is stuffed full of data.
Click here to download the .pdf file.
Year: 2021 | PT id = 1197, Type = formulation data spiral |
Nawa's Multi Periodic Table
Nagayasu Nawa - "A Japanese school teacher and periodic table designer" - has developed a "Multi" Periodic Table with three formulations: long-form, upsidedown long-form & circular with era of discovery, electronic structure and abundance data.
Click here to download the .pdf file.
Year: 2022 | PT id = 1241, Type = data |
Electronegativity Seamlessly Mapped Onto Various Formulations of The Periodic Table
A discussion on the Google Groups Periodic Table Discussion List, involving a René Vernon, Nawa Nagayasu & Julio Samanez (all contributors this database) lead to the development of the representations below, showing electronegativity seamlessly mapped onto a modified Left-Step Periodic Table:
Nawa Nagayasu has mapped electronegativity to Mendeleeve's formulation:
Nawa Nagayasu has mapped electronegativity onto other formulations, Julio's Binode Spiral:
and the "conventional", short, medium and long forms of the periodic table with hydrogen above and between B & C which show the botom-right-to-top-left electronegativity trend:
René Vernon's 777 Periodic Wedding Cake:
Valery Tsimmerman's ADOMAH formulation:
Valery Tsimmerman's ADOMAH tetrahedron (in a glass cube) formulation:
Year: 2023 | PT id = 1287, Type = formulation element data misc spiral |
Semicircular Hybrid Chart of the Nuclides
Nawa Nagayasu has produced a new version of the Segrè Chart of the Nuclides.
Nawa writes:
"The chart has the number of neutrons on the [curved] horizontal axis and the number of protons (atomic number) on the vertical axis. I used the IAEA colour coding [scheme]. JAEA's half-life ranks are indicated by simple numbers, not rounded frames.
"In order to fit the whole chart into a semicircle, the axis representing the number of neutrons was made a spiral-like curve. For clarity, the number of neutrons is shown in the middle of each curve."
Yuri Oganessian has commented:
"Nawa Nagayasu is an original and talented designer. After all, it is not easy to work with 118 elements, but now also with isotopes, of which there are more than 3000. The fan design looks attractive and this is very important. This will make people, especially school age, guess the numbers that are written there. So they will gradually delve into the content of the Table, a truly brilliant creation."
What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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