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Keyword: symmetry

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  • Functional Family: Mock Theta Mystery Solved

    03/09/2007 4:28:42 PM PST · by blam · 8 replies · 751+ views
    Science News ^ | 3-9-2007 | Erica Klarreich
    Functional Family: Mock theta mystery solved Erica Klarreich A pair of mathematicians has solved a problem that had tantalized number-theory researchers for more than 8 decades. It is the so-called final problem of the legendary Indian mathematical genius Srinivasa Ramanujan. In the years before his death in 1920, Ramanujan studied theta functions, which are numerical relationships that show special symmetries. On his deathbed, Ramanujan wrote a letter to his British collaborator G. H. Hardy, in which he listed 17 complicated formulas for new functions. He called them mock theta functions because they had some properties similar to those of theta...
  • New understanding of electromagnetism could enable 'antennas on a chip'

    04/11/2015 10:29:03 AM PDT · by LibWhacker · 33 replies
    Phys.org ^ | 4/8/15
    New understanding of electromagnetism could enable 'antennas on a chip' Apr 08, 2015 Enlarge Anechoic chamber. Credit: University of Cambridge A team of researchers from the University of Cambridge have unravelled one of the mysteries of electromagnetism, which could enable the design of antennas small enough to be integrated into an electronic chip. These ultra-small antennas - the so-called 'last frontier' of semiconductor design - would be a massive leap forward for wireless communications. In new results published in the journal Physical Review Letters, the researchers have proposed that electromagnetic waves are generated not only from the acceleration of electrons,...
  • Mathematicians Chase Moonshine’s Shadow

    03/13/2015 6:10:51 AM PDT · by LibWhacker · 19 replies
    Quanta Magazine ^ | 3/12/15 | Erica Klarreich
    Mathematicians Chase Moonshine’s Shadow Researchers are on the trail of a mysterious connection between number theory, algebra and string theory. In 1978, the mathematician John McKay noticed what seemed like an odd coincidence. He had been studying the different ways of representing the structure of a mysterious entity called the monster group, a gargantuan algebraic object that, mathematicians believed, captured a new kind of symmetry. Mathematicians weren’t sure that the monster group actually existed, but they knew that if it did exist, it acted in special ways in particular dimensions, the first two of which were 1 and 196,883.McKay, of...
  • In the quantum world, the future affects the past: Hindsight and foresight together...

    02/09/2015 1:48:40 PM PST · by LibWhacker · 32 replies
    Summary: In the quantum world, the future predicts the past. Playing a guessing game with a superconducting circuit called a qubit, a physicist has discovered a way to narrow the odds of correctly guessing the state of a two-state system. By combining information about the qubit's evolution after a target time with information about its evolution up to that time, the lab was able to narrow the odds from 50-50 to 90-10.We're so used to murder mysteries that we don't even notice how mystery authors play with time. Typically the murder occurs well before the midpoint of the book, but...
  • Discoverer of 'Impossible' Crystals Gets Chemistry Nobel—And Last Laugh

    10/06/2011 9:38:34 PM PDT · by neverdem · 10 replies
    ScienceNOW ^ | 5 October 2011 | Daniel Clery
    Enlarge Image Crystallized. Winner Daniel Shechtman and an atomic model of a quasicrystal (inset). Credit: The Ames Laboratory/DOE This year's Nobel Prize for chemistry goes to a scientist whose controversial discovery forced chemists to redefine the concept of a crystal. In 1982, Daniel Shechtman of the Israel Institute of Technology in Haifa discovered an alloy of aluminum and manganese that appeared to have fivefold symmetry—that is, the atoms in it formed a pattern that appeared essentially the same when rotated by a fifth of a turn, or 72 degrees. Other researchers scoffed, as such arrangement was thought to be...
  • In Brookhaven Collider, Scientists Briefly Break a Law of Nature

    02/20/2010 12:21:26 PM PST · by neverdem · 35 replies · 1,378+ views
    NY Times ^ | February 16, 2010 | DENNIS OVERBYE
    Physicists said Monday that they had whacked a tiny region of space with enough energy to briefly distort the laws of physics, providing the first laboratory demonstration of the kind of process that scientists suspect has shaped cosmic history. The blow was delivered in the Relativistic Heavy Ion Collider, or RHIC, at the Brookhaven National Laboratory on Long Island, where, since 2000, physicists have been accelerating gold nuclei around a 2.4-mile underground ring to 99.995 percent of the speed of light and then colliding them in an effort to melt protons and neutrons and free their constituents — quarks and...
  • What Is Life/Non-life in Nature?

    06/23/2008 3:05:46 PM PDT · by betty boop · 724 replies · 739+ views
    self | June 23, 2008 | Vanity
    What is Life/Non-life in Nature? by Jean F. Drew Everywhere we see the “behavior” of life/non-life (death) in nature; but that doesn’t tell us what life/non-life IS. Darwin’s theory of evolution doesn’t help with this question. It presupposes the existence of life axiomatically, and then proceeds to speak of the origin and evolution of species. Its fundamental assumption is that biological evolution is a wholly naturalistic, material process governed by the laws of physics and chemistry, with random variation and natural selection as the principal drivers of the system. Central to the Darwinist view is that life forms — species...
  • Is this the fabric of the universe?

    03/19/2007 8:34:38 PM PDT · by LibWhacker · 85 replies · 2,625+ views
    Telegraph ^ | 3/19/07 | Roger Highfield
    Roger Highfield describes a heroic mathematical enterprise that could lay bare the fundamentals of the cosmosMathematicians have successfully scaled their equivalent of Mount Everest. Today they unveil the answer to a problem that, if written out in tiny print, would cover an area the size of Manhattan. At the most basic level, the calculation is an arcane investigation of symmetry – in this case of an object that is 57 dimensional, rather than the usual three dimensional ones that we are familiar with. Although this object was first discovered in the 19th century. there is evidence that it could contain...
  • Exploring God(creator)'s Handiwork(creation) Part2

    04/06/2002 1:15:41 PM PST · by f.Christian · 11 replies · 275+ views
    The New American ^ | Published: December 22, 1997. | Fr. James Thorton
    Science continued its victorious march, with all of its attendant ramifications and side effects, throughout our own 20th century, and religious apathy and materialism have spread from the educated classes to all categories of people. This is especially true in Europe, where the percent of those who attend church has dropped into the single digits. It is true to a somewhat less spectacular degree in the United States, where the percentage attending church regularly has declined to below one half of the total population. Yet, despite the fact that the current has long run against traditional beliefs and traditional believers,...