Bruno was a 16th-century Italian philosopher who theorized that the universe is infinite. He entered a Dominican convent as a teen but abandoned the order after being accused of heresy and began traveling Europe lecturing and teaching. His cosmological theories anticipated modern conceptions of the universe but led to his excommunication by the Roman Catholic, Calvinist, and Lutheran churches. Arrested by the Inquisition in 1593, he was burned at the stake after a trial lasting how many years?
Back in the day
During WWII, Nagasaki became the target of the second atomic bomb ever detonated on a populated area. Three days after the US dropped a uranium bomb on Hiroshima, a more powerful plutonium device, code-named "Fat Man," was dropped on Nagasaki. Approximately 40,000 people were killed outright, and a total of 75,000 were killed or wounded. More than a third of the city was devastated. The necessity of the attack is still debated. The "Fat Man" was supposedly named after a character in what film?
Born on a day like today
Regarded as the foremost developmental psychologist of the 20th century, Piaget developed a theory of "genetic epistemology," a natural timetable for the development of the child's ability to think, in which he traced four stages—the sensorimotor (ages 0–2), preoperational or symbolic (2–7), concrete operational (7–12), and formal operational (12 and up)—each marked by increased cognitive sophistication and ability to use symbols. What specific developments occur in each stage?