Diffusion+of+luminous+rays
21atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …
22SI derived unit — The International System of Units (SI) specifies a set of seven base units from which all other units of measurement are formed, by products of the powers of base units. These other units are called SI derived units, for example, the SI derived… …
23Nikolaus Riehl — Born December 5, 1901 Saint Petersburg, Russia Died …
24law — 1. A principle or rule. 2. A statement of fact detailing a sequence or relation of phenomena that is invariable under given conditions. SEE ALSO: principle, rule, theorem. [A.S. lagu] Alexander l. states that a jerky nystagmus becomes worse when… …
25Metaphysics and science in the thirteenth century: William of Auvergne, Robert Grosseteste and Roger Bacon — Steven Marrone By the third decade of the thirteenth century there emerge the first signs of a new metaphysics. Alongside Neoplatonizing idealism we now see attempts to lay greater emphasis on the ontological density of the created world and to… …
26architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …
27Al-Andalus — This article is about the historical region. For the modern day region, see Andalusia. For the district in Kuwait, see Kuwait City. For the musical group, see Andalus. History of Al Andalus 711–1492 711–732 Musl …
28insect — insectival /in sek tuy veuhl/, adj. /in sekt/, n. 1. any animal of the class Insecta, comprising small, air breathing arthropods having the body divided into three parts (head, thorax, and abdomen), and having three pairs of legs and usually two… …
29Tyndall beam — Tyn·dall beam tind əl n the luminous path formed in the Tyndall effect by the breaking up of the entering light by the suspended particles called also Tyndall cone Tyndall John (1820 1893) British physicist. Tyndall was appointed professor of… …
30radiation — Synonyms and related words: X ray, actinic ray, actinism, arc lighting, asteroids, atomic beam, atomic ray, attenuation, aurora particles, beam, beam of light, black and white, blackout, broadcast, broadcasting, chiaroscuro, circumfusion,… …
