What does reflector tape look like under the microscope?

There are two kinds of reflective tapes which reflects light in one of two ways.

One type reflects light by using glass beads, and the other, shown below, uses micro prisms.

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Here is the reflector tape magnified at 200 and 400 times:

200x magnification
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400x magnification
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At 400x one can clearly see the micro prisms which is not visible to the naked eye.

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