Natural philosophy. being a hand-book of chemical physics, or, The physics of heat, light and electricity (1869)
Sangster, John Herbert, 1831-1904 · Montreal : J. Lovell · leaf 148
ractions and reflectionsof light by the falling drops of rain. In the primary bow thereis one reflection and two refractions, and in the secondary thereare two reflections and two refractions. Let O P be a line drawn from the eye of the observer to the centre of therainbows, and let A, B, C, and D,… … behind the drop, but those that fall upon the upper side of the drop willbe refracted, the red least and the violet most, and ■will fall upon theback of the drop so obliquely that some of them will be reflected as shewnin Fig 43 Upon again passing put of the drop they are refracted It 3io 142…
Physics
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