The INTERNET Database of Periodic Tables
There are hundreds of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Dr Mark R Leach.
Hackh's Spiral Periodic Table
Hackh's spiral periodic table of 1914, from Das Synthetisches System
der Atome, Hamburg, Hephaestos.
Philip Stewart says:
"I believe that Hackh's 1914 spiral is of special interest it is the first spiral to take account of Mosley's atomic numbers, and the first to show successively larger pairs of coils. It is also interesting because H stands alone in the centre. I have only seen Mazurs' redrawn (as usual!) version, but Mazurs gives SciAm Supplement 1919 as one reference."
This is the Mazurs version:
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© Mark R. Leach 1999-
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