News tagged with fundamental constant
Goal: developing the best atomic clock in the world
May 29, 2009 |
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They are masters at working with light: the scientists at the newly founded QUEST Institute at the Physikalisch-Technische Bundesanstalt (PTB), Braunschweig. And they want to work on some of the most exciting questions relating ...
Search results for fundamental constant
Examination of radiation left from birth of universe could alter theories
Apr 02, 2007 |
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Using relic radiation from the birth of the universe, astrophysicists at the University of Illinois have proposed a new way of measuring the fine-structure constant in the past, and comparing it with today.
Graphene gazing gives glimpse of foundations of universe
Apr 03, 2008 |
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Researchers at The University of Manchester have used graphene to measure an important and mysterious fundamental constant - and glimpse the foundations of the universe.
High-Flying Electrons May Provide New Test of Quantum Theory
Apr 29, 2008 |
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Researchers at the National Institute of Standards and Technology and Max Planck Institute for Physics in Germany believe they can achieve a significant increase in the accuracy of one of the fundamental constants ...
Clock Comparison Yields Clues to 'Constant' Change
Feb 15, 2007 |
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Years of comparisons among the world’s best atomic clocks—based on different atoms—have established the most precise limits ever achieved in the laboratory for detecting possible changes in so-called “constants” of nature. ...
Variable physical laws
Jun 08, 2006 |
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Physical quantities such as the speed of light, the gravitational constant and the electron mass are believed to be the same independent of where and when they appear in the universe. Therefore, they are known as constants ...
Zeroing in on Hubble's constant
Jan 05, 2009 |
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(PhysOrg.com) -- In the early part of the 20th Century, Carnegie astronomer Edwin Hubble discovered that the universe is expanding. The rate of expansion is known as the Hubble constant. Its precise value ...
Novel 'noise thermometry' may help redefine international unit of temperature
Jun 03, 2008 |
4.6 / 5 (14) |
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After seven years of work, researchers at the National Institute of Standards and Technology have built a system that relies on the "noise" of jiggling electrons as a basis for measuring temperatures with ...
Measurements may help show if constants are changing
Apr 28, 2006 |
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Physicists at JILA have performed the first-ever precision measurements using ultracold molecules, in work that may help solve a long-standing scientific mystery--whether so-called constants of nature have changed since the ...
What Anthropic Reasoning Can Really Tell Us
Feb 08, 2008 |
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Anthropic reasoning is under debate in the scientific community, and is considered by some as a cop-out. It has now lost further ground as physicists show that anthropic conclusions mostly reflect our biases ...
Researcher discover fundamental processes behind nature's constant balancing act
Biology /
Oct 29, 2008 |
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The natural world behaves a lot like the stock market, with periods of relative stability interspersed with dramatic swings in population size and competition between individuals and species.
List of search results for fundamental constant
