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Word Game - Lost in Time
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<blockquote data-quote="Opmmur" data-source="post: 66705" data-attributes="member: 13"><p><span style="font-size: 18px">The <strong>slide rule</strong>, also known colloquially in the United States as a <strong>slipstick</strong>,is a mechanical <a href="http://en.wikipedia.org/wiki/Analog_computer" target="_blank">analog computer</a>. The slide rule is used primarily for <a href="http://en.wikipedia.org/wiki/Multiplication" target="_blank">multiplication</a> and <a href="http://en.wikipedia.org/wiki/Division_%28mathematics%29" target="_blank">division</a>, and also for functions such as <a href="http://en.wikipedia.org/wiki/Nth_root" target="_blank">roots</a>, <a href="http://en.wikipedia.org/wiki/Logarithm" target="_blank">logarithms</a> and <a href="http://en.wikipedia.org/wiki/Trigonometry" target="_blank">trigonometry</a>, but is not normally used for <a href="http://en.wikipedia.org/wiki/Addition" target="_blank">addition</a> or <a href="http://en.wikipedia.org/wiki/Subtraction" target="_blank">subtraction</a>.</span></p><p> </p><p><span style="font-size: 18px">Slide rules come in a diverse range of styles and generally appear in a linear or circular form with a standardized set of markings (scales) essential to performing mathematical computations. Slide rules manufactured for specialized fields such as <a href="http://en.wikipedia.org/wiki/Aviation" target="_blank">aviation</a> or <a href="http://en.wikipedia.org/wiki/Finance" target="_blank">finance</a> typically feature additional scales that aid in calculations common to that field.</span></p><p> </p><p><span style="font-size: 18px"><a href="http://en.wikipedia.org/wiki/William_Oughtred" target="_blank">William Oughtred</a> and others developed the slide rule in the 17th century based on the emerging work on <a href="http://en.wikipedia.org/wiki/Logarithms" target="_blank">logarithms</a> by <a href="http://en.wikipedia.org/wiki/John_Napier" target="_blank">John Napier</a>. Before the advent of the <a href="http://en.wikipedia.org/wiki/Calculator" target="_blank">pocket calculator</a>, it was the most commonly used calculation tool in <a href="http://en.wikipedia.org/wiki/Science" target="_blank">science</a> and <a href="http://en.wikipedia.org/wiki/Engineering" target="_blank">engineering</a>. The use of slide rules continued to grow through the 1950s and 1960s even as <a href="http://en.wikipedia.org/wiki/Computer" target="_blank">digital computing devices</a> were being gradually introduced; but around 1974 the electronic <a href="http://en.wikipedia.org/wiki/Scientific_calculator" target="_blank">scientific calculator</a> made it largely obsolete and most suppliers left the business.</span></p><p> </p><p><span style="font-size: 18px"><a href="http://en.wikipedia.org/wiki/File:Pocket_slide_rule.jpg" target="_blank"><img src="http://upload.wikimedia.org/wikipedia/commons/a/a0/Pocket_slide_rule.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></span></p><p> </p><p><span style="font-size: 18px">A slide rule positioned so as to multiply by 2. Each number on the D (bottom) scale is double the number above it on the C (middle) scale.</span></p><p> </p><p><span style="font-size: 18px"><span style="font-family: 'arial'"><span style="color: #00ff00">I still own two Pickett slide rules: one Standard and a Electronic slide rule.</span></span></span></p></blockquote><p></p>
[QUOTE="Opmmur, post: 66705, member: 13"] [SIZE=5]The [B]slide rule[/B], also known colloquially in the United States as a [B]slipstick[/B],is a mechanical [URL='http://en.wikipedia.org/wiki/Analog_computer']analog computer[/URL]. The slide rule is used primarily for [URL='http://en.wikipedia.org/wiki/Multiplication']multiplication[/URL] and [URL='http://en.wikipedia.org/wiki/Division_%28mathematics%29']division[/URL], and also for functions such as [URL='http://en.wikipedia.org/wiki/Nth_root']roots[/URL], [URL='http://en.wikipedia.org/wiki/Logarithm']logarithms[/URL] and [URL='http://en.wikipedia.org/wiki/Trigonometry']trigonometry[/URL], but is not normally used for [URL='http://en.wikipedia.org/wiki/Addition']addition[/URL] or [URL='http://en.wikipedia.org/wiki/Subtraction']subtraction[/URL].[/SIZE] [SIZE=5]Slide rules come in a diverse range of styles and generally appear in a linear or circular form with a standardized set of markings (scales) essential to performing mathematical computations. Slide rules manufactured for specialized fields such as [URL='http://en.wikipedia.org/wiki/Aviation']aviation[/URL] or [URL='http://en.wikipedia.org/wiki/Finance']finance[/URL] typically feature additional scales that aid in calculations common to that field.[/SIZE] [SIZE=5][URL='http://en.wikipedia.org/wiki/William_Oughtred']William Oughtred[/URL] and others developed the slide rule in the 17th century based on the emerging work on [URL='http://en.wikipedia.org/wiki/Logarithms']logarithms[/URL] by [URL='http://en.wikipedia.org/wiki/John_Napier']John Napier[/URL]. Before the advent of the [URL='http://en.wikipedia.org/wiki/Calculator']pocket calculator[/URL], it was the most commonly used calculation tool in [URL='http://en.wikipedia.org/wiki/Science']science[/URL] and [URL='http://en.wikipedia.org/wiki/Engineering']engineering[/URL]. The use of slide rules continued to grow through the 1950s and 1960s even as [URL='http://en.wikipedia.org/wiki/Computer']digital computing devices[/URL] were being gradually introduced; but around 1974 the electronic [URL='http://en.wikipedia.org/wiki/Scientific_calculator']scientific calculator[/URL] made it largely obsolete and most suppliers left the business.[/SIZE] [SIZE=5][URL='http://en.wikipedia.org/wiki/File:Pocket_slide_rule.jpg'][IMG]http://upload.wikimedia.org/wikipedia/commons/a/a0/Pocket_slide_rule.jpg[/IMG][/URL][/SIZE] [SIZE=5]A slide rule positioned so as to multiply by 2. Each number on the D (bottom) scale is double the number above it on the C (middle) scale.[/SIZE] [SIZE=5][FONT=arial][COLOR=#00ff00]I still own two Pickett slide rules: one Standard and a Electronic slide rule.[/COLOR][/FONT][/SIZE] [/QUOTE]
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