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Treatise on Light3 passages
Light, CH i, 554b-555a dations, and stations✓ correct
In which are explained
The causes of that which occurs
In REFLEXION, & in REFRACTION
And particularly
In the strange REFRACTION
OF ICELAND CRYSTAL
By
CHRISTIAAN HUYGENS
Rendered into English
By
SILVANUS P. THOMPSON
University of Chicago Press
PREFACE
wrote this Treatise during my sojourn in France twelve years ago, and I communicated it in the year 1678 to the learned persons who… Read the rest of this passage →
Light^ CH vi, 610a-b✓ correct
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Light, CH v, 603b-604b✓ correct
In the same figure, if the plane CGHF cuts the crystal so that it divides the obtuse angles ACB, MHV, in the middle, it is stated, in Article 10, that the angle CFH is 70 degrees 57 minutes. This again is easily shown in the same spherical triangle ABF, in which it appears that the arc FQ is as many degrees as the angle GCF in the crystal, the supplement of which is the angle CFH. Now the arc FQ… Read the rest of this passage →