It appears to have first been discovered by Ibn Sahl in the 10th Century, who used it to work out the shapes of anaclastic lenses.
It appears to have first been discovered by Ibn Sahl in the 10th Century, who used it to work out the shapes of anaclastic lenses.* Thomas Harriot rediscovered it in the 16th Century, though he did not publish the work, and it was discovered once again in the 17th Century, though the discoverer is debated, leading it to be called "la loi de Descartes" in France. FTP, what is this simple formula used to calculate the refraction of light when traveling between two media with different refractive indexes and which is named for a Dutch mathematician?
It appears to have first been discovered by Ibn Sahl in the 10th Century, who used it to work out the shapes of anaclastic lenses.
Snell’s Law