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Look at the example given at the bottom of the attached table. Log(0.003674) = -3.5652. I understand how this is procured from the log table.

But if you use a calculator and plug in the numbers directly, you get log(0.003674) = -2.4348.

Why is there such a discrepancy? I'm really stumped on this. Thanks.

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1 Answer

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$\log(3.674\cdot10^{-3})=\log(3.674)-3=0.5652-3 = -2.4348$ The notation $\bar{3}.4348$ doesn't mean $-3.4348$ but $0.4348-3$, it is correct, they only use a notation which you aren't familiar with. There should be some kind of notes about notation is the tables as well.

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