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Find number abc

If 5a785 - 4b4bb = 16b5c find number abc. Multiple solutions may exist.

Correct answers: 57

The first user who solved this task is Djordje Timotijevic.

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Photosensitive glass

In 1947, the development of photosensitive glass was announced publicly in Corning, N.Y. It had first been made by the Corning Glass Works in Nov 1937. The glass is crystal clear, but exposure to ultraviolet light followed by heat treatment forms submicroscopic metal particles creating an image within the glass. This is believed to be the most durable form of photographic medium, and to be as permanent as the glass itself.

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