When I look for log base 10 of 0.496 in log books(Clark's table) it is somewhat bar1. 655 with some point .But using a calculator I am getting -0.345. so why is it different.
2026-02-23 12:05:32.1771848332
Logarithms in calc ulat or vs those in book
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$\bar 1.655$ means $-1+0.655=-0.345$. In old days when we can only find logarithms using tables, it was common to use this notation. We find $\log 4.96$ from table, obtaining the value $0.655$. $\log 0.496=\log 4.96-1=\bar 1.655$.