Coconut oil, or copra oil, is an edible oil extracted from the kernel or meat of mature coconuts harvested from the coconut palm (Cocos nucifera). It has various applications.
The chronometer is an instrument that accurately measures time. The first one invented was a marine chronometer, and it was created out of the necessity to have an accurate timekeeper for sea travel. John Harrison, a British clockmaker, invented this device in 1737.
William Marston (right) in 1922, testing his lie detector invention. Marston is credited as the creator of the systolic blood pressure test, which became one component of the modern polygraph invented by John Augustus Larson in Berkeley, California.