Optics: Did you mean...?

Owen Tudor, aka Owain ap Maredudd ap Tudor (c. 1400-1461 CE), was a Welsh courtier who secretly married Catherine of Valois (l. 1401 - c. 1437 CE), the former wife of Henry V of England (r. 1413-1422 CE) and mother of Henry VI of...

The Dissolution of the Monasteries was a policy introduced in 1536 CE by Henry VIII of England (r. 1509-1547 CE) to close down and confiscate the lands and wealth of all monasteries in England and Wales. The plan was...

Tiamat is the Mesopotamian goddess associated with primordial chaos and the salt sea, best known from the Babylonian epic Enuma Elish. In all versions of the myth, following the original, Tiamat always...

Persian literature differs from the common definition of “literature” in that it is not confined to lyrical compositions, to poetry or imaginative prose, because the central elements of these appear, to greater or lesser degrees...

William Shakespeare (1564-1616) was an English poet, playwright, and actor who flourished during the late Elizabethan and early Jacobean eras. Known as the 'Bard of Avon,' he wrote 38 plays, 154 sonnets, and three longer...

An ice age is a period in which the earth's climate is colder than normal, with ice sheets capping the poles and glaciers dominating higher altitudes. Within an ice age, there are varying pulses of colder and warmer climatic conditions...

St. Anthony's Fire (SAF) is an illness brought on by the ingestion of fungus-contaminated rye grain causing ergot poisoning (ergotism). The disease's common name derives from the medieval Benedictine monks dedicated to that...

Homo habilis ("handy man") is an extinct species of human that lived in East and South Africa between 2.3 and 1.5 million years ago and plays an interesting role in the discussion surrounding the dawn of our genus of Homo, which...

Cassius Dio (c. 164 - c. 229/235 CE) was a Roman politician and historian. Although he held a number of political offices with distinction, he is best known for his 80-volume Roman History. The work took 22 years to complete, was...

Stretching between China and India in the east to the Mediterranean in the west, Parthia ruled over one of the widest expanses of empire in its time and Parthian culture flourished for 500 years (247 BCE to 224 CE). While known...