"Mendeleev began arranging the elements and comparing them by their atomic weights." Here is an extremally long article about the Periodic Table: Periodic table - Wikipedia It fascinated me at school and it still fills me with wonder. I found this interactive table which explains information about an element when you click on its' symbol. It works on line. It's Elemental - The Periodic Table of Elements I downloaded it as a PDF file and it still works. But when I tried to download it again I could not. Take care, John
Cray Flow Of Time (poem by me)
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Feeling insane ,overwhelmed with chores
Flowing swiftly away from the shore
Waves are crazy ,putting upside down
Time’s river looks like a frowned
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1 hour ago