JDMvW Posted March 14, 2014 Share Posted March 14, 2014 <p>Today is PI day (3/14=π) and although this would formerly have gone in "off topic" I think the wonderful visualizations of the number at<br /> http://www.theguardian.com/science/alexs-adventures-in-numberland/gallery/2014/mar/14/pi-day-pi-transformed-into-incredible-art-in-pictures <br /> justify drawing your attention to that <em>Guardian</em> post</p> <blockquote> <p>The number 3.14159 … as you have never seen it before. Striking computer-generated images of the most famous number in maths</p> </blockquote> Link to comment Share on other sites More sharing options...
sarah_fox Posted March 14, 2014 Share Posted March 14, 2014 <p>We could not call ourselves well rounded photographers if we didn't occasionally entertain these topics!</p> <p>Happy pi day, JDM! :)</p> Link to comment Share on other sites More sharing options...
CharlesBecker-Toronto Posted March 14, 2014 Share Posted March 14, 2014 <p>aha-now I understand the B&H logo on Google+ (the 'H' has been replaced by the Pi sign. cb :-)</p> Link to comment Share on other sites More sharing options...
aplumpton Posted March 14, 2014 Share Posted March 14, 2014 <p>A universel cuisine constant, or 1/ square root of II, or (approx,) 0.56 of a pie</p><div></div> Link to comment Share on other sites More sharing options...
Damon DAmato Posted March 14, 2014 Share Posted March 14, 2014 <p>Next year, it will be 3-14-15, as in 3.1415.<br /><br />Then, on 3-14-16, I guess you can round from up 3.14159...</p> Link to comment Share on other sites More sharing options...
James G. Dainis Posted March 14, 2014 Share Posted March 14, 2014 3.1415926... blah, blah, blah. I say it is about time we change the value of pi to a nice even 3.0. School children everywhere would be eternally grateful. Yeah, I realize that means we would be bumping along on hexagonal tires but that would be a small price to pay to make math easier for everyone. James G. Dainis Link to comment Share on other sites More sharing options...
bobatkins Posted March 14, 2014 Share Posted March 14, 2014 <p> "<em>I say it is about time we change the value of pi to a nice even 3.0</em>"<br> http://en.wikipedia.org/wiki/Indiana_Pi_Bill</p> Link to comment Share on other sites More sharing options...
Andy Murphy Posted March 14, 2014 Share Posted March 14, 2014 <p>Today is also Einstein's birthday.</p> Link to comment Share on other sites More sharing options...
sarah_fox Posted March 14, 2014 Share Posted March 14, 2014 <blockquote> <p>Today is also Einstein's birthday.</p> </blockquote> <p>That's about the best piece of trivia I've heard in a good while.</p> Link to comment Share on other sites More sharing options...
Brad_ Posted March 14, 2014 Share Posted March 14, 2014 <a href= "https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn2/t1.0- 9/q71/s720x720/10001377_10152296024724917_903277832_n.jpg">Cute</a>... www.citysnaps.net Link to comment Share on other sites More sharing options...
leo_papandreou1 Posted March 15, 2014 Share Posted March 15, 2014 <p>What 2π (aka "tau") <a href=" like</a>.</p> Link to comment Share on other sites More sharing options...
randrew1 Posted March 15, 2014 Share Posted March 15, 2014 <p>Any image of a circle is a visualization of pi. </p> Link to comment Share on other sites More sharing options...
michaellinder Posted March 15, 2014 Share Posted March 15, 2014 <p>Ah, James . . . If we took your suggestion, our universe would be diminished by the value of 3.14159............</p> Link to comment Share on other sites More sharing options...
mendel_leisk Posted March 15, 2014 Share Posted March 15, 2014 <blockquote> <p><a name="00cS1s"></a><a href="/photodb/user?user_id=423911">James Dainis</a> <a href="/member-status-icons"><img title="Moderator" src="/v3graphics/member-status-icons/mod.gif" alt="" /><img title="Subscriber" src="/v3graphics/member-status-icons/sub10plus.gif" alt="" /><img title="Frequent poster" src="/v3graphics/member-status-icons/1roll.gif" alt="" /></a>, Mar 14, 2014; 07:59 p.m.</p> </blockquote> <blockquote> <p>3.1415926... blah, blah, blah. I say it is about time we change the value of pi to a nice even 3.0. School children everywhere would be eternally grateful.<br> Yeah, I realize that means we would be bumping along on hexagonal tires but that would be a small price to pay to make math easier for everyone.</p> </blockquote> <p>I sincerely wish you'd been in the room when they were determining the size of a mm, ie: how many of them make an inch. At the outset, even 25.4 was not the precise value, and the difference would manifest in longer distances, say a few miles.</p> <p>Over the years countless engineers and manufacturers have frittered away insane hours dealing with the disjointed conversion.</p> Link to comment Share on other sites More sharing options...
aplumpton Posted March 15, 2014 Share Posted March 15, 2014 <p>Ah, Mendel,</p> <p>Pi is a fantastic and immeasurable constant, not conforming to the neat homo sapiens ideas of correctness, containing something very simple that perhaps we cannot yet imagine.</p> <p>As for the colonial British standard of measurement (feet, pounds, gallons, etc.) still prevalent in some parts parts of the world, that is certainly changeable with will, and hopefully the liberating light of the decimal system will eventually be adopted there. Somehow, that possibility, bizarre as it may be, is inversely proportional to the progression of English as one of the three or four common languages of the world.</p> Link to comment Share on other sites More sharing options...
JDMvW Posted March 15, 2014 Author Share Posted March 15, 2014 <p>I will add that there is an argument for PI=3.0 in <a href="http://www.biblegateway.com/passage/?search=1+Kings+7%3A23&version=KJV">I Kings 7:23</a> -<br> Strenuous efforts to explain this apparent error are made by people who subscribe to "inerrancy"</p> <p>This, of course, is the real reason behind legislative attempts in various states to define π as 3.0, not making it easier for students.</p> Link to comment Share on other sites More sharing options...
michaellinder Posted March 15, 2014 Share Posted March 15, 2014 <p>JDM, I'll bite. Can you please convert the value of pi to cubits?</p> Link to comment Share on other sites More sharing options...
JDMvW Posted March 15, 2014 Author Share Posted March 15, 2014 <p><a href="http://video.about.com/math/How-to-Find-the-Perimeter-of-a-Circle.htm">circumference (perimeter) = PI times diameter </a><br /> so <em>circumference divided by diameter</em> equals PI</p> <p>so PI is a <em>ratio</em>, so according to I Kings, the ratio is 30 cubits divided by 10 cubits so the <em>cubits</em> 'cancel out' and the answer is 3.0, not in cubits at all.<br /> Not that you didn't know that already. But I am a retired professor, and we are <em>trained</em> not to dismiss any question as stupid. ;)</p> <p>In ancient Babylon at 1900 BCE, give or take a century or three, π was treated as 25/8 = 3.1250. Similar ratios were used in various other ancient societies.</p> Link to comment Share on other sites More sharing options...
jim_service Posted March 15, 2014 Share Posted March 15, 2014 <p>Bob, your post reminded me of an old, I think, Martin Gardner column that read in part, "If pi equalled three, this sentence would look like this.", where all the o's were replaced with little hexagons.</p> Link to comment Share on other sites More sharing options...
colin carron Posted March 16, 2014 Share Posted March 16, 2014 <p>I have always enjoyed Monte Carlo methods of arriving at solutions. Here is a nice Monte Carlo method for estimating Pi though you need to be a poor darts player to achioeve a random spread and so get the best results :)<br> http://polymer.bu.edu/java/java/montepi/MontePi.html<br> Don't you just love those transcendental numbers?</p> Link to comment Share on other sites More sharing options...
sarah_fox Posted March 16, 2014 Share Posted March 16, 2014 <p>Leo, "Tau" was really cool! Thanks for the link!</p> Link to comment Share on other sites More sharing options...
michaellinder Posted March 16, 2014 Share Posted March 16, 2014 <p>JDM - One of my favorite quips from a professor in graduate school was, "That's either trivially true or interestingly false." Being the insecure type, I opted for the former. Now that I've reached advance age, I opt for the latter.</p> Link to comment Share on other sites More sharing options...
michaellinder Posted March 17, 2014 Share Posted March 17, 2014 <p>JDM: I'm not sure whether your calculation comes under Disraeli's famed pronouncement about statistics. If not, I'm sure it's covered by the principle of minimum mutilation. </p> Link to comment Share on other sites More sharing options...
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