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Harvesting of cork from the forests of Algeria, 1930. Cork is a natural material used by humans for over 5,000 years. It is a material whose applications have been known since antiquity, especially in floating devices and as stopper for beverages, mainly wine, whose market, from the early twentieth century, had a massive expansion, particularly due to the development of several cork-based ...
The Victorian Turkish bath is a type of hot-air bath that originated in Ireland in 1856. It was explicitly identified as such in the 1990s and then named and defined [3] to necessarily distinguish it from the baths which had for centuries, especially in Europe, been loosely, and often incorrectly, called "Turkish" baths.
Air flow in fume hood demonstrated by dry ice fog. A fume hood is typically a large piece of equipment enclosing six sides of a work area (including a movable sash window or door), the bottom of which is most commonly located at a standing work height (at least 28 to 34 inches (71 to 86 cm) above the floor).
A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.
UNSCEAR recommends [60] a reference value of 9 nSv (Bq·h/m 3) −1. For example, a person living (7000 h/year) in a concentration of 40 Bq/m 3 receives an effective dose of 1 mSv/year. Studies of miners exposed to radon and its decay products provide a direct basis for assessing their lung cancer risk.
Ethan Allen (January 21, 1738 [O.S. January 10, 1737] [a] – February 12, 1789) was an American farmer, writer, military officer and politician. He is best known as one of the founders of Vermont and for the capture of Fort Ticonderoga during the American Revolutionary War, and was also the brother of Ira Allen and the father of Fanny Allen.
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