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$a

\lg\left(10^a\right)

= U t t r y c k e t

\lg\left(10^a\right)

k a n f \overset{o}{¨} r e n k l a s t i l l

a$. Men detta gäller även åt andra hållet, dvs. ett tal kan alltid skrivas som tiologaritmen av en tiopotens, exempelvis

4 = l g (1 0^{4}) eller 2.318 = l g (1 0^{2.318})

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