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.
The German physicist Daniel Gabriel Fahrenheit (1686 1736) came first. In 1714, he invented the mercury-in-glass thermometer that 300 years on is still one of the most accurate and most widely used means of measuring temperature.