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21 Themes and 'Year of' Events for 2025 PART ONE, THE FIRST 12 Every year, various organizations announce the theme for the year. These themes can focus on causes, such as aesthetics and color tre...
November is the start of the holiday season in many parts of the world. It is a time for family, football, food, shopping and decorating, particularly in the Christian and Jewish world, leading to Christmas and...
Events in December 2024. Well, we made it to December. December is the holiday season, particularly in Western nations, where Christianity and Judaism are the faiths most common in the nation's past. ...
Periodic Table Day marks the anniversary of publishing the first table of elements by English chemist John Newlands on February 7, 1863. His is distinctive because he was the first to categorize elements based on atomic mass. Newlands' however, was different from what we're familiar with today. Russian Dmitri Mendeleev created the format in 1869. He is the man who organized the tables in columns and rows based on their atomic weight and the occasions of repetition of base elements.
Like most science, the periodic table is an international affair. To reach the point of Newlands and Mendeleev, contributions from the French (1789, 1857, 1862) and Germans (1829, 1843) would add to the final product of an Englishman and a Russian. David T Steineker first observed periodic Table Day.
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