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Optics
How long does the light travel from the Sun to the Earth?
Optics
A glass bottle covered of fluorescent lights is covered on the inside with phosphor - a substance that provides the spectrum, close to the sun when it is irradiated by violet or ultraviolet light. Explain the reason for the phenomenon.
Optics
Can I look directly at the sun at noontime? Won't it burn the eyes?
Optics
What are the laws of reflection in geometrical optics?
