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.
Best Answer: The stethoscope was invented by the French physician R.T.H. LaÃ«nnec. RenÃ© ThÃ©ophile Hyacinthe LaÃ«nnec is generally considered to be the father of chest medicine. One day in 1816, Laennec is invited by urchins to hear to the scratching of a pin transmitted through the length of a wooden beam.