Leibniz

  Gottfried Wilhelm Leibniz was born on July 1, (which was June 21, Old Style), 1646 and died in 1716. He was a German philosopher, mathematician, and political adviser, important both as a metaphysician and as a logician. His prominent place in the history of mathematics is due to his invention of the differential and… Read More Leibniz

  17 June: World Day to Combat Desertification and Drought

The United Nations’ World Day to Combat Desertification and Drought is annually observed on June 17 to highlight the urgent need to limit desertification and recover from drought. Desertification does not refer to the expansion of existing deserts but to the degradation of land in arid, semi-arid and dry sub-humid areas, caused primarily by human… Read More   17 June: World Day to Combat Desertification and Drought

Franklin’s kite

   Franklin’s kite   15 June 1752: this is the traditional date for Benjamin Franklin’s kite experiment (the exact date is unknown), which proved that lightning is electricity At the time electricity wasn’t “useful” yet, but it was just used for amusement. It was a polite entertainment for ladies and gentlemen who enjoyed creating  sparks… Read More Franklin’s kite