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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).

   Use the drop menus or search box (below) to Select or Search the 1400 entries in the database: 

  Or, Search by Text String:       




Year:  2012 PT id = 512, Type = non-chem

Four of Diamonds: A Pirate Story

From the Creative Output blog, "Jim was a respectable middle-aged man who suddenly became a pirate. He didn't just start downloading art in ways contrary to the artists' wishes. He actually became a pirate. One minute he was looking at cat pictures on the internet at work, the next he was standing on an enemy ship, with a cutlass in one hand and a hook on the other...":

Thanks to Eric Scerri for the tip!
See the website EricScerri.com and Eric's Twitter Feed.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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