What major optical phenomenon did Brewster discover?
Photoelectric effect
Photovoltaic effect
Photoelasticity
Photorefractive effect
Answer
Brewster discovered photoelasticity, a fascinating phenomenon where certain materials become birefringent, meaning they split a light beam into two paths, when mechanically stressed. This brilliant scientist made crucial contributions to the understanding of the relationship between light and stress, pioneering a new field of optics and engineering.
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