MathBench > Measurement

Logs and pH

The log is the power!

"Counting the zeros" is the same as saying "what power would I need to raise 10 to in order to get this measurement?" That's important, but hard to remember. The short version of "what power would I need..." is ...

the log is the power log


Likewise, if your chances of winning the lottery are 1-in-a-million ( = 0.000001), we could say that

log(0.000001) = -6, so 10^-6 = 0.000001 --> the log is the power! won the lottery!


You can use the applet below to practice finding the log of easy (non-messy) numbers. Keep at it until it becomes very easy!


log(0.001) =
perfect !
pretty close ...
not so close



log crushing bike