the.com/logarithm
the math trick that turned impossible multiplication into addition and saved astronomers from going insane
inventorJohn Napier spent 20 years building the first tables
slide rulespowered engineering and Apollo missions for centuries
human earsperceive loudness logarithmically, not linearly
earthquakeseach Richter point means ten times the shaking
the e baseappears naturally in growth, decay, and compound interest