Physics: Did you mean...?

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...

Robert Boyle (1627-1691) was an Anglo-Irish chemist, physicist, and experimental philosopher. Boyle was a prolific author, made significant experiments with air pumps, and presented the first litmus test. A founding member of the...

Saint Thomas Aquinas (l. 1225-1274, also known as the "Ox of Sicily" and the "Angelic Doctor") was a Dominican friar, mystic, theologian, and philosopher, all at once. Although he lived a relatively short life, dying at age 49...

The Manhattan Project was the code name for the secret US-led programme to develop an atomic bomb during the Second World War (1939-45). Hugely expensive and employing the best scientific minds from Europe...

James II of England (r. 1685-1688) reigned briefly as the king of England, Scotland, and Ireland until he was deposed by the Glorious Revolution of November 1688. James, also known as James VII of Scotland, was the fourth Stuart...

Western astrology refers to a form of divination based on the motion of astronomical objects such as stars or planets. The belief that astronomical objects are divine or influence events on Earth is found in many cultures, but...

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...

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...

Gottfried Wilhelm Leibniz (1646-1716) was a German polymath who became well-known across Europe for his work, particularly in the fields of science, mathematics, and philosophy. Leibniz's rationalist philosophy attempted...

Zeno of Elea (l. c.465 BCE) was a Greek philosopher of the Eleatic School and a student of the elder philosopher Parmenides (l.c. 485 BCE) whose work influenced the philosophy of Socrates (l. c. 470/469-399 BCE). Zeno and Parmenides...