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A telescope is able to detect radiation with a wavelengthof 0.000008157 meters.Estimate using Scientific notation

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We have to write the non zero digits, with the decimal points after the first digit.

8.157

And the add x10 to a power.

Since the number is smaller than one, we have to move the decimal point to the right as many places as the power (in negative form)

0.000008157 = 8.157 x 10^-6

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