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  • 121 Electronic tuner — Pocket sized Korg chromatic LCD tuner, with simulated analog indicator needle The term electronic tuner can refer to a number of different things, depending which discipline you wish to study. In the Discipline of radio frequency electronics an… …

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  • 122 Rangekeeper — Rangekeepers were electromechanical fire control computers used primarily during the early part of the 20th century. They were sophisticated analog computers whose development reached its zenith following World War II, specifically the Computer… …

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  • 123 Geography in medieval Islam — Islamic geography includes the advancement of geography, cartography and earth sciences under various Islamic civilizations. During the medieval ages, Islamic geography was driven by a number of factors: the Islamic Golden Age, parallel… …

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  • 124 diagnosis — /duy euhg noh sis/, n., pl. diagnoses / seez/. 1. Med. a. the process of determining by examination the nature and circumstances of a diseased condition. b. the decision reached from such an examination. Abbr.: Dx 2. Biol. scientific… …

    Universalium

  • 125 Nobel Prizes — ▪ 2009 Introduction Prize for Peace       The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …

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  • 126 Hermann Joachim Hahn — Hermann Joachim Hahn, zeitgenössischer Stich Hermann Joachim Hahn (* 30. Juli 1679 in Grabow; † 21. Mai 1726 in Dresden) war ein protestantischer Prediger der Dresdner Kreuzkirche. Seine Ermordung durch einen Katholiken wurde zu einem publizi …

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  • 127 Handloading — or reloading is the process of loading firearm cartridges or shotgun shells by assembling the individual components (case/shotshell, primer, powder, and bullet/shot), rather than purchasing completely assembled, factory loaded cartridges.… …

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  • 128 John Harrison — Infobox Scientist name = John Harrison |300px image width = 260px caption = P.L. Tassaert s half tone print of Thomas King s original 1767 portrait of John Harrison, located at the Science and Society Picture Library, London birth date = birth… …

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  • 129 Pendulum clock — A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. From its invention in 1656 by Christiaan Huygens until the 1930s, the pendulum clock was the world s most accurate timekeeper, accounting for its… …

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  • 130 Tycho Brahe — This article is about the astronomer Tycho Brahe. For other uses, see Tycho Brahe (disambiguation). Tycho Ottesen Brahe Born 14 December 1546 Knutstorp Castle, Scania Died 24 October 1601 (age …

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  • 131 Tube map — as of April 2011. Part of a series of articles on The Tube …

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  • 132 Experiment — Experimental redirects here. For the musical classification, see Experimental music. For other uses, see Experiment (disambiguation). Even very young children perform rudimentary experiments in order to learn about the world. An experiment is a… …

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  • 133 Elo rating system — Chess Go The Elo rating system is a method for calculating the …

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  • 134 Sundial — A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style (a thin rod or a sharp, straight edge) onto a flat surface marked with lines indicating… …

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  • 135 Loss of significance — is an undesirable effect in calculations using floating point arithmetic. It occurs when an operation on two numbers increases relative error substantially more than it increases absolute error, for example in subtracting two large and nearly… …

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  • 136 Musket — Muskets and bayonets aboard the frigate Grand Turk. A musket is a muzzle loaded, smooth bore long gun, fired from the shoulder. Muskets were designed for use by infantry. A soldier armed with a musket had the designation musketman or musketeer.… …

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  • 137 Hygrometer — Not to be confused with hydrometer. A hygrometer (UK: /haɪˈɡrɒmɪtə/) is an instrument used for measuring the moisture content in the environmental air, or humidity. Most measurement devices usually rely on measurements of some other quantity …

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  • 138 Pedometer — A pedometer (also known as a Tomish meter, perhaps after the alleged inventor of a successful device, Thomas Jefferson ) or step counter is a device, in modern times usually portable and electronic or electromechanical, that counts each step a… …

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  • 139 Scale (map) — The scale of a map is defined as the ratio of a distance on the map to the corresponding distance on the ground. If the region of the map is small enough for the curvature of the Earth to be neglected, then the scale may be taken as a constant… …

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  • 140 Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …

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