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The magnifying power V of a simple magnifying glass is related to its optical power φ by V = 0.25 m × φ + 1 {\displaystyle V=0.25\ \mathrm {m} \times \varphi +1} . This is approximately the magnification observed when a person with normal vision holds the magnifying glass close to his or her eye.
The width of the hot-lead Monotype type is expressed in units of a set. The widest letter in the alphabet, usually the capital "W", was measured in quarter-pica points, a unit being 1 ⁄ 18 part of this width.
In the 1950s, Pilkington Bros., England, developed the float glass process, producing high-quality distortion-free flat sheets of glass by floating on molten tin. [21] Modern multi-story buildings are frequently constructed with curtain walls made almost entirely of glass. [47] Laminated glass has been widely applied to vehicles for windscreens ...
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9.11 X - Thyratron. 9.11.1 ... 15.2 General literature and data sheets. 16 ... A compactron used for color and black and white television sets. The 3BW2 comes with X ...
I've finally set my preferred skin back to Monobook on the Wikipedias that I use. Example configuration (though most of this can be changed without affecting the font size difference): Safari 5.0.3; MacBook Pro 13" screen = 1280 x 800; Mac OS X 10.6.5; Standard font set to Helvetica 13, and View > Actual Size (no zoom)
[10] [11] The answer depends on the definition of "people", i.e., whether only Homo sapiens are to be counted, or all of the genus Homo; due to the small population sizes in the Lower Paleolithic, however, the order of magnitude of the estimate is not affected by the choice of cut-off date substantially more than by the uncertainty of estimates ...
Vital articles is a list of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles.
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