that side of the Globe towards the Sun, and if the Angle be made greater (suppose by lifting up the Globe to H) the red will turn successively to the other Colours, yellow, green and blue. The same thing I have tried, by letting a Globe rest, and raising or depressing the Eye, or otherwise moving it to make the Angle of a just magnitude. I have heard it represented, that if the Light of a Candle be refracted by a Prism to the Eye; when the blue Colour falls upon the Eye, the Spectator shall see red...

towards the Sun, and if the Angle be made greater (suppose by lifting
up the Globe to H) the red will turn successively to the other Colours,
yellow, green and blue. The same thing I have tried, by letting a Globe
rest, and raising or depressing the Eye, or otherwise moving it to make
the Angle of a just magnitude.

I have heard it represented, that if the Light of a Candle be refracted

pkg math, const SqrtPhi ideal-float
pkg math, const SqrtPi ideal-float
pkg math, func Abs(float64) float64
pkg math, func Acos(float64) float64
pkg math, func Acosh(float64) float64
pkg math, func Asin(float64) float64
pkg math, func Asinh(float64) float64
pkg math, func Atan(float64) float64
pkg math, func Atan2(float64, float64) float64
pkg math, func Atanh(float64) float64
pkg math, func Cbrt(float64) float64