The pontifex maximus was the highest priest of Roman religion and the official head of the college of pontifices. As the chief administrator of religious affairs, he regulated the conduct of religious ceremonies, consecrated temples and other holy places, and controlled the calendar. During the time of the empire, and until Christianity became firmly established, the emperor was designated pontifex maximus. What religious leaders assumed the title after the rise of Christianity?
Back in the day
In 1983, after five years of development, Apple released the Lisa, the first personal computer with a graphical user interface. Although the Lisa was a commercial failure—due in part to its initial price tag of $9,995—it had a significant impact on the computer industry. It is often rumored to have been named after the first daughter of Apple's Steve Jobs, though several acronyms have been ascribed to the name. What project did Jobs join after being forced out of the Lisa project?
Born on a day like today
A largely self-taught Scottish engineer and inventor, Watt greatly impacted the Industrial Revolution with his development of the Watt engine. Asked to repair a model of Thomas Newcomen's steam engine, he instead made improvements to it that resulted in a new type of engine. One such design enhancement, the separate condenser, radically improved the power, efficiency, and cost-effectiveness of steam engines. The watt, a unit of power, is named for him. What other unit of power did he develop?