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Mita Kojd

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1. Djordje Timotijevic 4455
2. Mita Kojd 4432
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last 3 solved tasks
Remove 7 letters from this sequence (DQEMOAGRCBAIZPHYA) to reveal a familiar English word.
Remove 5 letters from this sequence (CLEARNKIVLMNG) to reveal a familiar English word.
If 554a6 - 351aa = 2c2ab find number abc. Multiple solutions may exist.

Xerography

In 1938, xerography was demonstrated by Chester F. Carlson. With his assistant, Otto Kornei, Carlson used a sulphur coating on a zinc plate, vigorously rubbed with a handkerchief to apply an electrostatic charge. A glass slide was prepared using India ink to write "10-22-38 ASTORIA," then laid on the sulphur surface in a darkened room. After illuminating them with a bright incandescent lamp for a few seconds, the slide was removed. When lycopodium powder was sprinkled on the sulphur surface and blown off, there remained a near-perfect image of the writing. Permanent copies were made by transferring the powder images to wax paper and heating the sheets to melt the wax. Xerox is a term coming from "xerography" which means dry writing and is a trademark.

A lot of problems

A lot of problems in the world would disappear if we would talk to each other instead of about each other!
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