Engineering

21 March, 02:18

In order to protect eyes from damaging near ultraviolet light (UVA with wavlength of 329 nm), sunglasses are often coated so this light is reflected. The index of refraction of the plastic coating is 1.39, the index of refraction of the glass this coating is placed on is 1.59 and the thickness of the glass is 1.97 mm. What thickness coating should be used

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