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| What is the Periodic Table Showing? | Periodicity |
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. The database holds information on periodic tables, the discovery of the elements, the elucidation of atomic weights and the discovery of atomic structure (and much, much more).
Periodic Tables from the year 2002 :
| Year: 2002 | PT id = 55, Type = misc |
Chinese Character Periodic Tables
Chinese character periodic tables, here, here & here:
| Year: 2002 | PT id = 196, Type = non-chem |
Mathematicians
Periodic Table of Mathematicians. Click the elements to see info on famous number crunchers:
| Year: 2002 | PT id = 220, Type = misc |
Corning Museum of Glass Periodic Table
A periodic table made from glassware at the Corning Museum of Glass:
| Year: 2002 | PT id = 429, Type = data |
Inorganic Chemist's Periodic Table
An Inorganic Chemist's Periodic Table by Geoff Rayner-Canham, here. This PT was used on the cover of Descriptive Inorganic Chemistry, Third Edition.
The major links in the Periodic Table are those of the Groups and Periods. There are other patterns:
- The (n) and (n+10) groups linkages (grey)
- The diagonal relationships (green)
- The "knights move" relationships (tan)
- The aluminum-iron link (red)
- The lanthanoid and actinoid relationships (grey)
- The "combo" elements (violet)
- The "pseudo" elements (blue)
| Year: 2002 | PT id = 528, Type = formulation spiral 3D |
System Québécium Periodic Table
Using Google Translate of this page:
"To establish a new classification system components, Pierre Demers was assumed that the electronic structure of the atom contains one of my all others according to the equation Z = 117 to Z = 1. It is taking my electrons and removing them from my material that can reproduce all the elements and thus repeat the structure of your table. That is why this new organization is called the System Québécium":
| Year: 2002 | PT id = 531, Type = misc |
Protein Structure Periodic Tables
From a paper by W. R. Taylor, A 'Periodic Table' for Protein Structures, Nature, 2002 Apr 11;416(6881):657-60
Abstract:
Current structural genomics programs aim systematically to determine the structures of all proteins coded in both human and other genomes, providing a complete picture of the number and variety of protein structures that exist. In the past, estimates have been made on the basis of the incomplete sample of structures currently known. These estimates have varied greatly (between 1,000 and 10,000; see for example refs 1 and 2), partly because of limited sample size but also owing to the difficulties of distinguishing one structure from another. This distinction is usually topological, based on the fold of the protein; however, in strict topological terms (neglecting to consider intra-chain cross-links), protein chains are open strings and hence are all identical. To avoid this trivial result, topologies are determined by considering secondary links in the form of intra-chain hydrogen bonds (secondary structure) and tertiary links formed by the packing of secondary structures. However, small additions to or loss of structure can make large changes to these perceived topologies and such subjective solutions are neither robust nor amenable to automation. Here I formalize both secondary and tertiary links to allow the rigorous and automatic definition of protein topology.
This work has been developed by Efrosini Moutevelis and Derek N. Woolfson in their paper A Periodic Table of Coiled-Coil Protein Structures, J. Mol. Biol. (2009) 385, 726–732.
Abstract:
Coiled coils are protein structure domains with two or more ?-helices packed together via interlacing of side chains known as knob-into-hole packing. We analysed and classified a large set of coiled-coil structures using a combination of automated and manual methods. This led to a systematic classification that we termed a "periodic table of coiled coils", which we have made available here. In this table, coiled-coil assemblies are arranged in columns with increasing numbers of α-helices and in rows of increased complexity. The table provides a framework for understanding possibilities in and limits on coiled-coil structures and a basis for future prediction, engineering and design studies.
| Year: 2002 | PT id = 690, Type = non-chem |
Personality Elements
By Frans Maan, a Periodic Table of Personality Elements. Click here for the full size pdf.
As Frans says in his email "Scaffolding integrating trait psychology, developmental psychology, homeopathy etc.":
| Year: 2002 | PT id = 714, Type = formulation |
Tetrahedral Twist: Chemistry Puzzle and Teaching Device
A twisting three dimensional puzzle apparatus for the study of chemistry and its history and based upon the Zmaczynski equilateral triangular model of the periodic table of the chemical elements. Each face of the pyramid has a series of equilateral shaped portions bearing portions of the periodic table of elements. The different segments can be rotated around in order to scramble the puzzle. Such portions can be constructed using same or similar technology that was used to design the Meffert PYRAMINX PUZZLE that is similar to the RUBIK'S CUBE design.
From a US Patent.
| Year: 2002 | PT id = 898, Type = element |
Discovery of Oganesson
Og 
Oganesson, atomic number 118, has a mass of 294 au.
Synthetic radioactive element.
Oganesson was first observed in 2002 by Y. Oganessian et al.
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| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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