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CHAPTER IV.. On the Refraction of the Air.

Treatise on Light · Christiaan Huygens — chapter 4 of 12 · ~56 words · public domain

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On the Refraction of the Air.

That the emanations of Light in the air are not spherical.

How consequently some objects appear higher than they are.

How the Sun may appear on the Horizon before he has risen.

That the rays of light become curved in the Air of the Atmosphere, and what effects this produces.

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