Why is the game of checkers so named?

(/) Reader question – Pedro Henrique Gomes de Queiroz, São Paulo, SP Because, in the Middle Ages, it was an almost exclusively female pastime. While the complexity of chess was only recommended for men of the aristocracy, the “weaker sex”…

How does the stethoscope work?

»> You know those phones made with two cans and a string between them? Well, the stethoscope works more or less the same way as this crude communicator: the device transmits the sound waves, preventing the sound from being lost…

How is the hierarchy within Freemasonry?

ILLUSTRATIONS Andre Toma how can you check in this part of the report, Freemasonry had subdivisions and adaptations over time. Today, it has a common base, but later evolves into more than 50 different hierarchies (the so-called Rites). Only two…

Why is the owl a symbol of wisdom?

Influenced by Greek mythology, so much so that Athena, goddess of war and wisdom, had an owl as a mascot. The Greeks considered the night as the moment of philosophical thought and intellectual revelation and the owl, being a nocturnal…