"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
How These Iconic Songs Got Their Names
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YouTuber Walrus Pepper Skelter quickly runs through how 55 songs got the
titles they have. The explanations often have nothing to do with the song's
ly...
1 hour ago