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Ten Cats by Graham Harrop for October 23, 2021
October 22, 2021
October 24, 2021
Today is:
National Canning Day
National Make A Difference Day
National Boston Cream Pie Day
IPod Day
National TV Talk Show Host Day. I don’t watch any of the TV talk shows.
Swallows Depart From San Juan, Capistrano Day
National Mole Day. I was wondering why they would have a day honoring those burrowing pests. It would be like having a National Flea and Tick Day (I hope there’s no such thing as THAT!). So I had to look it up. No. it isn’t about the little rodents. Here is what I found out: “National Mole Day recognizes a special number in chemistry. Chemists and chemistry students mark the occasion each year on October 23rd. More specifically, the celebrations take place between 6:02 AM and 6:02 PM. In the U.S., the time and date are written 6:02 10/23. The time and date are derived from Avogadro’s number. Avagadro’s number is approximately 6.02×10^23. Hence, defining the number of particles (atoms or molecules) in one mole of a substance, one of the seven base SI units. A mole is a unit of measurement used in chemistry to express amounts of a chemical substance. Avogadro’s number is a historical term closely related to the Avogadro constant. The Avogadro constant is named after the early 19th-century Italian scientist Amedeo Avogadro.”