Luxist Web Search

Snell's law(also known as Snell–Descartes lawand the law of refraction) is a formulaused to describe the relationship between the angles of incidenceand refraction, when referring to light or other wavespassing through a boundary between two different isotropicmedia, such as water, glass, or air.

Cogito, ergo sum. The Latin cogito, ergo sum, usually translated into English as " I think, therefore I am ", is the "first principle" of René Descartes 's philosophy. He originally published it in French as je pense, donc je suis in his 1637 Discourse on the Method, so as to reach a wider audience than Latin would have allowed.

Prelude. The naval arms race between Britain and Germany to build dreadnought battleships in the early 20th century is the subject of a number of books. Germany's attempt to build a battleship fleet to match that of the United Kingdom, the dominant naval power of the 20th-century and an island country that depended on seaborne trade for survival, is often listed as a major reason for the ...

According to Jonathan Israel, these laid down two distinct lines of Enlightenment thought: first, the moderate variety, following Descartes, Locke and Christian Wolff, which sought accommodation between reform and the traditional systems of power and faith, and second, the radical enlightenment, inspired by the philosophy of Spinoza, advocating ...

La Défense(French: [la de.fɑ̃s]) is a major business districtlocated three kilometres west of the city limitsof Paris. It is part of the Paris metropolitan areain the Île-de-Franceregion, located in the departmentof Hauts-de-Seinein the communesof Courbevoie, La Garenne-Colombes, Nanterre, and Puteaux.