Google Doodle Today: Celebrating 100th birth anniversary of César Lattes; a Brazilian physicist who discovered pion

Google Doodle Today: Google Doodle on July 11 is celebrating birthday of Brazilian physicist and teacher César Lattes, who discovered the ‘pion’ or ‘pi meson’. Speaking on César Lattes’ discovery, Google Doodle states, “Happy birthday César Lattes, thank you for paving the way for experimental physics in Latin America and around the world!” The story dates back to when a researcher had brought two photographic plates to the top of a mountain. Google Doodle states, “Lattes correctly suspected that adding boron to photographic plates would give him a clearer image of particles breaking down. It worked so well, he could see each proton.” Not only did Lattes’ uncover the existence of pi mesons, but also found that some mesons are heavier than others.