logarithm
ko · counterpart 로그
The inverse of exponentiation. log_b(x) asks: what power of b gives x?
invented
1614 · John Napier · Edinburgh, Scotland
Astronomers computing eclipse predictions were dying inside multiplying nine-digit numbers by hand. Napier spent 20 years building tables that turn each such product into a single sum. Apollo got to the moon on slide rules — direct descendants of his tables.
en.wikipedia.org/wiki/Mirifici_Logarithmorum_Canonis_Descriptio ↗
related
used on · 4