Read full article Continue reading page |1|2 The dust library - physics-math - 03 January 2012
Forget leap years, months with 28 days and your birthday falling on a different day of the week each year. Researchers at Johns Hopkins University in Maryland say they have a better way to mark time: a new calendar in which every year is identical to the one before. Is It Time to Overhaul the Calendar?
A Fun DIY Science Goodie: Proof Yourself against Sensationalized Stats | Guest Blog For my book Brain Trust, I interviewed Keith Devlin, NPR’s “Math Guy,” a World Economic Forum fellow, and math professor at Stanford. And being a mathematician, Devlin thinks about things differently than the world at large. For example, in his very good monthly column Devlin’s Angle, he quotes the following problem, originally designed by puzzle master Gary Foshee: “I tell you that I have two children, and that (at least) one of them is a boy born on Tuesday.
The High-Stakes Math Behind the West's Greatest River
Ultimate Fighting vs. math: no holds barred - Ideas
Ever wonder how efficient it is to heat water? Burning Desire for Efficiency
An Adventure in the Nth Dimension On the mystery of a ball that fills a box, but vanishes in the vastness of higher dimensions Brian Hayes The area enclosed by a circle is πr2.
Seven equations that rule your world - physics-math - 13 February 2012 Read full article
By now, all aficionados of physics news — and quite a few people who don’t know physics from phonics — have heard about the discovery of the Higgs boson. Essay: Nature's Secrets Foretold
Mathematics: Mapping a fixed point 22.11.11 - For fifty years, mathematicians have grappled with a so-called “fixed point” theorem. An EPFL-based team has now found an elegant, one-page solution that opens up new perspectives in physics and economics. Take a map of the world. Now put it down on the ground in Central Park, against a rock on Mount Everest, or on your kitchen table; there will always be a point on the map that sits exactly on the actual physical place it represents.
On Points Tallis in Wonderland Raymond Tallis pinpoints the mathematics/reality divide. Readers of this column will have had a hint of my views on the limitations of the ability of maths and physics to capture lived experience – in particular in ‘Time, Tense and Physics: The Theory of Everything But…’ in Issue 81.
Wrinkled doughnut solves geometrical mystery - physics-math - 30 April 2012 This may be the weirdest doughnut you have ever seen, but it solves a long-standing geometrical puzzle that evaded mathematicians including Nobel laureate John Nash, who inspired the film A Beautiful Mind. Topology is the branch of mathematics concerned with the geometric deformations of objects.
THE symbols we use to represent numbers are, mathematically speaking, arbitrary. Now there is a way to write numbers so that their areas equal their numerical values. The font, called FatFonts, could transform the art of data visualisation, allowing a single infographic to convey both a visual overview and exact values. Font for digits lets numbers punch their weight - physics-math - 12 May 2012
May 11, 2012 6:28 p.m. How to Beat the Odds at Judging Risk
More Science::Advances::May 11, 2012:: ::Email::Print See Inside In Their Prime: Mathematicians Come Closer to Solving Goldbach's Weak Conjecture
The Search for a More Perfect Kilogram | Magazine The perfect kilogram is getting lighter. Can science find a better measure?Photo: Christopher Griffith; kilogram models by Jim Zivic The official US kilogram — the physical prototype against which all weights in the United States are calibrated — cannot be touched by human hands except in rare circumstances. Sealed beneath a bell jar and locked behind three heavy doors in a laboratory 60 feet under the headquarters of the National Institute of Standards and Technology 20 miles outside Washington, DC, the shiny metal cylinder is, in many ways, better protected than the president. “Everything is a potential contaminant,” says Patrick Abbott, a NIST physicist responsible for maintaining it.
After decades of worry, toil and argument, metrologists have officially begun the process of tying the definitions of four basic units to nature's fundamental constants. The General Conference on Weights and Measures (CGPM) in Paris, France, has unanimously agreed on a proposal that would lead to reform of the mole, kilogram, kelvin and ampere, according to the international system of units (SI). That puts us on the cusp of a historic change in the way science sizes up the world. Agreement to tie kilogram and friends to fundamentals - physics-math - 25 October 2011