MLA Citation: Bloomfield, Louis A. "Question 1359"
How Everything Works 20 Oct 2017. 20 Oct 2017 <http://howeverythingworks.org/print1.php?QNum=1359>.
1359. Would placing a blue filter on a Xerox machine prevent it from making copies, since blue light has more energy than red?
No. Blue light causes the photoconductor to conduct. When you use white light in a xerographic copier, it's the blue and green portions of the light that usually do the copying. The red is wasted.

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