Question

hello friends ##
plz answer this question.....

What is photo degradation? What are it's effects?
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Answer 1

hey mate!

Photodegradation is the alteration of materials by light. Typically, the term refers to the combined action of sunlight and air. Photodegradation is usually oxidation and hydrolysis. Often photodegradation is avoided, since it destroys paintings and other artifacts