The pits in a compact disc are some of the smallest things ever mass produced mechanically by humans. These pits represent the 1s and Os of digital information on a compact disc. these pits are only 1.6 x 10^-8 m deep. (1/4 the wavelength of red laser light). How many of these pits would have to be stacked on top of each other to make a hole 0.305 m deep ?
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.305/.0000000016
= 190625000
= 190625000