## Anti-logs

By the way, if you know the log value and you want to find the original value of the number, how do you do it?

Use the anti-log, of course!! However, **if your calculator doesn't have an anti-log key, you can
raise 10 to the log, or use the 10 ^{x} key**. For example, the log of the pollen diameter
was −4.5, therefore the diameter in meters is

10^{(−4.5)} = 0.0000316 m

If you are using Google as a calculator, type "10^(−4.5) = " and hit enter.

### How big is a fly's eye? The log of the diameter is −3.1...

(To make this problem interactive, turn on javascript!)

- I need a hint ... : Remember, the log is the exponent.

- ...another hint ... : Raise 10 to the log to get the original measurement back.

- ...another hint ... : Use the 10
^{x}key on your calculator, or type "10^−3.1 = " on google.

#### I think I have the answer: 10^{−3.1} = 0.00080 m.

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