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Follow on twitter: @thatsmathsWed, 04 Jan 2017 20:19:11 +0000hourly1http://wordpress.com/Comment on Sunflowers and Fibonacci: Models of Efficiency by Mesmerizing Fractals – Kreativ Løve
https://thatsmaths.com/2014/06/05/sunflowers-and-fibonacci-models-of-efficiency/#comment-4749
Wed, 04 Jan 2017 20:19:11 +0000http://thatsmaths.com/?p=2593#comment-4749[…] Phyllotaxis is the botanical study of the arrangement of phylla (leaves, petals, seeds, etc.) on plants. More than four centuries ago, the great astronomer Johannes Kepler noticed the spiral patterns on plants but no satisfactory explanation has emerged until recently. Phyllotactic spirals form distinctive patterns in a variety of plants. For example, the leaves are often arranged in a helical pattern, as if winding around the stem. On pineapples, the hexagonal fruits fit together in interlocking families of helical spirals. The numbers of spirals are successive Fibonacci numbers like 5, 8 and 13. Sunflowers, which belong to the daisy family, usually have 55, 89 or 144 petals, and spiral patterns are evident in their seeds. Biologists described long ago how the phylla are arranged, but explaining why these patterns form is much more difficult, and it is only recently that real progress has been made. Classical explanations of phyllotaxis appeal to optimisation principles, but do not account for how these optima are achieved. (read more about the maths behind the efficient packing of sunflowers and many other plants here). […]
]]>Comment on The Edward Worth Library: a Treasure Trove of Maths by The Edward Worth Library: a Treasure Trove of Maths – Arran Q Henderson
https://thatsmaths.com/2016/12/15/the-edward-worth-library-a-treasure-trove-of-maths/#comment-4746
Mon, 19 Dec 2016 21:09:57 +0000http://thatsmaths.com/?p=6293#comment-4746[…] Source: The Edward Worth Library: a Treasure Trove of Maths […]
]]>Comment on Ramanujan’s Astonishing Knowledge of 1729 by 1729 and the Sum of Two Cubes | Bermatematika
https://thatsmaths.com/2016/05/12/ramanujans-astonishing-knowledge-of-1729/#comment-4723
Sat, 15 Oct 2016 01:08:34 +0000http://thatsmaths.com/?p=5016#comment-4723[…] The two different ways are 93 + 103 = 13 + 123 = 1729. Ramanujan knew this fact through series expansions of some rational functions [ThatsMaths (2016), “Ramanujan’s Astonishing Knowledge of 1729”]. […]
]]>Comment on Rollercoaster Loops by Quora
https://thatsmaths.com/2014/04/10/rollercoaster-loops/#comment-4663
Wed, 29 Jun 2016 03:39:18 +0000http://thatsmaths.com/?p=2435#comment-4663Is there a name for the shape created by joining a spring’s ends together?

]]>Comment on CT Scans and the Radon Transform by How Computing Power Can Help Us Look Deep Within Our Bodies, and Even the Earth - FuelAddictsFuelAddicts
https://thatsmaths.com/2013/03/07/ct-scans-and-the-radon-transform/#comment-4652
Tue, 31 May 2016 19:04:22 +0000http://thatsmaths.com/?p=1324#comment-4652[…] hand, as in the video above. That problem had a mathematical solution that had been studied by the Austrian mathematician Johann Radon in 1917 and rediscovered by the American physicist (and Tufts professor) Allan Cormack in the […]
]]>Comment on CT Scans and the Radon Transform by How Computing Power Can Help Us Look Deep Within - Tech in America
https://thatsmaths.com/2013/03/07/ct-scans-and-the-radon-transform/#comment-4651
Tue, 31 May 2016 12:05:04 +0000http://thatsmaths.com/?p=1324#comment-4651[…] hand, as in the video above. That problem had a mathematical solution that had been studied by the Austrian mathematician Johann Radon in 1917 and rediscovered by the American physicist (and Tufts professor) Allan Cormack in the […]
]]>Comment on CT Scans and the Radon Transform by How computing power can help us look deep within our bodies, and even the Earth | Complete World News
https://thatsmaths.com/2013/03/07/ct-scans-and-the-radon-transform/#comment-4650
Tue, 31 May 2016 03:21:06 +0000http://thatsmaths.com/?p=1324#comment-4650[…] hand, as in the video above. That problem had a mathematical solution that had been studied by the Austrian mathematician Johann Radon in 1917 and rediscovered by the American physicist (and Tufts professor) Allan Cormack in the […]
]]>Comment on The Ups and Downs of Hailstone Numbers by For how many consecutive numbers Collatz conjecture was checked? - MathHub
https://thatsmaths.com/2013/07/11/the-ups-and-downs-of-hailstone-numbers/#comment-4639
Thu, 12 May 2016 15:51:41 +0000http://thatsmaths.com/?p=1716#comment-4639[…] I heard here that Collatz conjecture was checked at least for every first $5 cdot 10^{18}$ natural numbers, but I cannot find any source or actual information about this. Can anyone help to find out up to which number (or factor of 10) we can now say that Collatz Conjecture is definitely true? […]
]]>Comment on How Big was the Bomb? by What Is Your Data Worth? | Vijay Bhat
https://thatsmaths.com/2014/09/18/how-big-was-the-bomb/#comment-4435
Tue, 09 Feb 2016 19:59:49 +0000http://thatsmaths.com/?p=2786#comment-4435[…] power of a nuclear device by looking at a photograph? Impossible, you say. But British physicist Geoffrey Taylor did exactly that. He correctly estimated the explosive yield of the Trinity nuclear tests in 1947, […]
]]>Comment on Euclid in Technicolor by Task #1 – minfomationgraphics
https://thatsmaths.com/2014/02/20/euclid-in-technicolor/#comment-4434
Mon, 08 Feb 2016 22:03:59 +0000http://thatsmaths.com/?p=2288#comment-4434[…] (2014). Euclid in Technicolor. [online] Available at: https://thatsmaths.com/2014/02/20/euclid-in-technicolor/ [Accessed 8 Feb. […]
]]>Comment on Sunflowers and Fibonacci: Models of Efficiency by My Blog
https://thatsmaths.com/2014/06/05/sunflowers-and-fibonacci-models-of-efficiency/#comment-4432
Sun, 07 Feb 2016 21:05:17 +0000http://thatsmaths.com/?p=2593#comment-4432[…] Sources: Sunflowers and Fibonacci: Models of Efficiency […]
]]>Comment on Paddling Uphill by Mississippi River and Its Distance from the Center of the Earth | Math Encounters Blog
https://thatsmaths.com/2013/07/25/paddling-uphill/#comment-4423
Tue, 26 Jan 2016 14:06:35 +0000http://thatsmaths.com/?p=1755#comment-4423[…] Paddling Uphill […]
]]>Comment on Biscuits, Books, Coins and Cards: Massive Hangovers by Massive Hangovers and the Harmonic Series | the time particle
https://thatsmaths.com/2014/06/12/biscuits-books-coins-and-cards-massive-hangovers/#comment-4392
Mon, 28 Dec 2015 10:41:06 +0000http://thatsmaths.com/?p=2580#comment-4392[…] Peter Lynch’s original blog post, Biscuits, Books, Coins and Cards: Massive Hangovers, can be found here: https://thatsmaths.com/…/biscuits-books-coins-and-cards-mas…/ […]
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