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Library Baruch Spinoza

Traditional attribution

Algebraic Calculation of the Rainbow (doubtful attribution)

Stelkonstige reeckening van den regenboog

Retrato anónimo de Spinoza (Wolfenbüttel)
byBaruch Spinoza

A short treatise of geometrical optics that calculates mathematically the formation of the rainbow from the refraction of light in water drops. It was published together with the Calculation of Chances. Modern critical editions include it among the doubtful works.

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Editions and translations · 1

Nederlands

Authorship note

An anonymous booklet published in The Hague in 1687 by Levyn van Dyck; its attribution to Spinoza, proposed in the nineteenth century, is disputed: some identify it with the lost Treatise on the Rainbow; others reject it.