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The Hawthorne effect is a type of human behavior reactivity in which individuals modify an aspect of their behavior in response to their awareness of being observed. [1][2] The effect was discovered in the context of research conducted at the Hawthorne Western Electric plant; however, some scholars think the descriptions are fictitious.
An illuminated manuscript is a formally prepared document where the text is decorated with flourishes such as borders and miniature illustrations.Often used in the Roman Catholic Church for prayers and liturgical books such as psalters and courtly literature, the practice continued into secular texts from the 13th century onward and typically include proclamations, enrolled bills, laws ...
Cotton library. The Pearl Manuscript (British Library MS Cotton Nero A X/2), also known as the Gawain manuscript, [1] is an illuminated manuscript produced somewhere in northern England in the late 14th century or the beginning of the 15th century. It is one of the best-known Middle English manuscripts, [2] the only one containing alliterative ...
Green electroluminescence from a point contact on a crystal of SiC recreates Round's original experiment from 1907. Close-up of a 1 watt red power led. Electroluminescence as a phenomenon was discovered in 1907 by the English experimenter H. J. Round of Marconi Labs, using a crystal of silicon carbide and a cat's-whisker detector.
Adelard of Bath (Latin: Adelardus Bathensis; c. 1080? – c. 1142–1152?) was a 12th-century English natural philosopher. He is known both for his original works and for translating many important Greek [1] [2] scientific works of astrology, astronomy, philosophy, alchemy and mathematics into Latin from Arabic versions, which were then introduced to Western Europe.
The Lumières movement redefined the ideas of liberty, property and rationalism, which took on meanings that we still understand today, and introduced into political philosophy the idea of the free individual, liberty for all guaranteed by the State (and not the whim of the government) backed by a strong rule of law.
The 26th General Conference on Weights and Measures (CGPM) redefined the candela in 2018. [10] [11] The new definition, which took effect on 20 May 2019, is: The candela [...] is defined by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency 540 × 10 12 Hz, [a] K cd, to be 683 when expressed in the unit lm W −1, which is equal to cd sr W −1 ...
Miniature of Sinon and the Trojan Horse, from the Vergilius Romanus, a manuscript of Virgil's Aeneid, early 5th century. A miniature (from the Latin verb miniare, "to colour with minium", a red lead [1]) is a small illustration used to decorate an ancient or medieval illuminated manuscript; the simple illustrations of the early codices having been miniated or delineated with that pigment.