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News articles tagged with 'fluctuations'

[chronologically, reverse order]

NIST engineers discover fundamental flaw in transistor theory

— 22 May 2009 13:39 | Technology

Chip manufacturers beware: There's a newfound flaw in our understanding of transistor noise, a phenomenon affecting the electronic on-off switch that makes computer circuits possible.... — full story

Seeing beyond the invisible

— 22 May 2009 12:30 | Environment

Studies of climate evolution and the ecology of past-times are often hampered by lost information - lost variables needed to complete the picture have been long thought untraceable... — full story

Southern glaciers grow out of step with North

— 2 May 2009 17:56 | Environment

The vast majority of the world's glaciers are retreating as the planet gets warmer. But a few, including ones south of the equator, in South America and New Zealand, are inching forward... — full story

New models question old assumptions about how many molecules it takes to control cell division

— 25 Feb 2009 12:50 | Biology

A single cell - whether a yeast cell or one of your cells - is exquisitely sensitive to its surroundings. It receives input signals, processes the information, makes decisions, and... — full story

Mystery of twin quasar brightness revealed

— 2 Feb 2009 09:46 | Astronomy

Variations in the brightness of the Q0957+561 quasar, also known as the 'twin quasar' due to its duplicated image on Earth, are intrinsic to the entity itself and not caused by the... — full story

This is the cosmic microwave background as seen by the WMAP satellite. This radiation was emitted when the Universe was 380,000 years old and has an average temperature of 2.7 Kelvin. The red and blue spots are temperature fluctuations that differ from the average temperature by only 0.0002 degrees. The region of maximal variation is in the lower right quadrant, (c) NASA, WMAP Science TeamCaltech researchers interpret asymmetry in early Universe

— 17 Dec 2008 11:34 | Astronomy

The Big Bang is widely considered to have obliterated any trace of what came before. Now, astrophysicists at the California Institute of Technology (Caltech) think that their new theoretical... — full story

Predicting boom and bust ecologies

— 30 Oct 2008 12:16 | Environment

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... — full story

Mechanism for postpartum depression found in mice

— 31 Jul 2008 13:18 | Health

Researchers have pinpointed a mechanism in the brains of mice that could explain why some human mothers become depressed following childbirth. The discovery could lead to improved treatment... — full story

In this photo montage of actual quantum images, two laser beams coming from the bright glare in the distance transmit images of a cat-like face at two slightly different frequencies (represented by the orange and the purple colours). The twisted lines indicate that the seemingly random changes or fluctuations that occur over time in any part of the orange image are strongly interconnected or 'entangled' with the fluctuations of the corresponding part in the purple image. Though false colour has been added to the cats' faces, they are otherwise actual images obtained in the experiment, (c) Vincent Boyer, JQIResearchers produce quantum-entangled images

— 12 Jun 2008 23:31 | Physics

Using a convenient and flexible method for creating twin light beams, researchers at the Joint Quantum Institute (JQI) of the Commerce Department's National Institute of Standards and... — full story

Simulation of the last scattering surface and its nearest duplicates in PDS topology, (c) Observatoire de Paris and CNRSThe Poincare Dodecahedral Space model gains support to explain the shape of space

— 11 Feb 2008 19:10 | Astronomy

An international team of cosmologists, leaded by a researcher from Paris Observatory, has improved the theoretical pertinence of the Poincare Dodecahedral Space (PDS) topology to explain... — full story

News articles tagged with 'fluctuations' — 13
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