History 04 Lesson 85

Mariner’s Astrolabe- Before the mariner’s astrolabe there was the cross staff and the quadrant. The mariner’s astrolabe can be used in wind and on ships. Hipparchus invented the mariner’s astrolabe in 2nd century BC. He invented it in Oman. Double-Entry Bookkeeping- Luca Pacioli invented double-entry bookkeeping in 1494 AD. He invented it in Milan. IfContinue reading “History 04 Lesson 85”