Physics: Did you mean...?

The steam engine developed by the Scotsman James Watt (1736-1819) from 1769 was much more efficient in terms of power and fuel consumption than earlier models, and it significantly increased the possible uses for this key invention of the...

Greek literature has influenced not only its Roman neighbors to the west but also countless generations across the European continent. Greek writers are responsible for the introduction of such genres as poetry, tragedy, comedy, and western...

Adam Smith (1723-1790) was a Scottish philosopher, economist, and leading Enlightenment figure. In The Wealth of Nations, he advocates free trade and limited interference in markets by governments, for which he is seen as the founder of liberal...

Montesquieu (1689-1757) was a French philosopher whose ideas in works like The Spirit of the Laws helped launch the Enlightenment movement in Europe. His ideas on the separation of powers, that is, between the executive, legislative, and...

Claudius Ptolemy (c. 100 to c. 170 CE) was an Alexandrian mathematician, astronomer, and geographer. His works survived antiquity and the Middle Ages intact, and his theories, particularly on a geocentric model of the universe with planets...

Voltaire (1694-1778) was a French author, historian, and philosopher whose thoughts on religious toleration and moderation of authoritarian power were influential during the Enlightenment. His most famous work today is the satirical Candide...

Nicolaus Copernicus (1473-1543 CE) was a Polish astronomer who famously proposed that the Earth and other planets revolved around the Sun in a heliocentric system and not, as then widely thought, in a geocentric system where the Earth is...

The Scientific Revolution in Europe, roughly 1500 to 1700, was a profound intellectual and cultural transformation that forever altered humanity's understanding of the natural world. The period witnessed a seismic shift from medieval beliefs...

The Council of Chalcedon was called in 451 CE by the Roman Emperor Marcian (r. 450-457) to settle debates regarding the nature (hypostases, "reality") of Christ that had begun at two earlier meetings in Ephesus (431 CE and 439 CE). The question...

Hellenistic astrology encompassed various forms of divination in Greece and the Mediterranean, all linked to the observation of astronomical phenomena. Hellenistic astrology was based on the belief that the stars and planets could either...