#679 Who invented the slide rule?
Who invented the slide rule? Willian Oughtred in 1622. I think, first, I need to look at what a slide rule is because not many people under 60 will have…
Who invented the slide rule? Willian Oughtred in 1622. I think, first, I need to look at what a slide rule is because not many people under 60 will have…
Watch on YouTube How was the meter (metre) defined? In 1791 it was defined as one ten-millionth of the distance from the equator to the North Pole. The word “meter”…