Category Archives: Optics

A Brief Look at Mirages – Li Kewei

From grim tales of that delusional oasis to legends of that mysterious ship in the sky, mirages have long captured the imagination and fascination of men. They are definitely amongst the most famous and fascinating of atmospheric optical phenomena. The … Continue reading

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Optics: Fermat’s Principle of Least Time – Li Kewei

Introduction Optics is a complicated subject which involves many levels of approximations. As of now, the full picture of how light behaves is encapsulated in the modern theory of quantum electrodynamics (QED), which is far too advanced for our level … Continue reading

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