{"id":25038,"date":"2014-07-29T14:32:46","date_gmt":"2014-07-29T19:32:46","guid":{"rendered":"http:\/\/blogs.ams.org\/mathgradblog\/?p=25038"},"modified":"2014-08-13T19:39:55","modified_gmt":"2014-08-14T00:39:55","slug":"logarithms-celebrate-400th-birthday","status":"publish","type":"post","link":"https:\/\/blogs.ams.org\/mathgradblog\/2014\/07\/29\/logarithms-celebrate-400th-birthday\/","title":{"rendered":"Logarithms Celebrate Their 400th Birthday – A Science News Article"},"content":{"rendered":"
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A pocket slide rule. Photo acquired from Wikimedia Commons, the free media repository<\/p><\/div>\n

The first time I entered the math library at Lebanon Valley College, I was struck by what I saw on top of the bookcases – a giant slide rule!\u00a0 Though I had never used one, I remembered my dad telling me about how he had to use a slide rule in his math classes in college.\u00a0 This iconic piece of mathematical technology owes its existence to the mathematical development that is celebrating its 400th birthday this year – the invention of logarithms.<\/p>\n

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I recently came across a link to a Science News article by Tom Siegfried entitled Logarithms celebrate their 400th birthday<\/a>.\u00a0 The article discusses how John Napier revolutionized mathematics in 1614 with his invention of logarithms.\u00a0 Though many considered the logarithm a godsend, not everyone was convinced.<\/span><\/p>\n

Napier\u2019s mathematical wizardry wasn\u2019t universally appreciated, though, as rumors swirled that he was actually a dark wizard, \u00e0 la Lord Voldemort. For one thing, Napier\u2019s grass seemed to be greener than other landowners. And he allegedly trained a magical black rooster to identify thieves among his workers.<\/span><\/p><\/blockquote>\n

The article also discusses how the invention of logarithms led to the development of the slide rule.<\/p>\n

It wasn\u2019t long until others figured out how to put the logarithms to use in mechanical calculations using sticks. Inscribing numbers on the sticks at intervals proportional to their logarithms made it possible to multiply numbers by proper positioning of the sticks. Edmund Gunter<\/a>, a London clergyman and friend of Briggs, had the germ of the idea in 1620. But the honor of first to slide the sticks is usually accorded to William Oughtred<\/a>, an Episcopal minister, who also devised a circular version of the slide rule in the 1620s.<\/p><\/blockquote>\n

The invention of logarithms introduced a new way for quickly performing complicated calculations, with one mathematician claiming that “logarithms effectively doubled a mathematician\u2019s useful lifetime.”\u00a0 Without the tools that logarithms offer the sciences today, our understanding of the world would be greatly limited.<\/p>\n

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The first time I entered the math library at Lebanon Valley College, I was struck by what I saw on top of the bookcases – a giant slide rule!\u00a0 Though I had never used one, I remembered my dad telling … Continue reading →<\/span><\/a><\/p>\n

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