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CD-ROM data

Data on a CD-ROM as seen by a CD-ROM drive pickup unit.

The pits (black dots and short lines) are less than 1µm wide.

See here:

en.wikipedia.org/wiki/Compact_disc#mediaviewer/File:Compa...

The upper right part of the picture is out of focus.

Picture taken with DIY CD-ROM scanning microscope.

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Uploaded on August 30, 2014
Taken on August 30, 2014