Study explains how Maxwell's demon uses mutual information to extract work
Quantum measurement carries information even when the measurement outcome is unread
POLARBEAR detects curls in the universe's oldest light
(Phys.org) —Cosmologists have made the most sensitive and precise measurements yet of the polarization of the cosmic microwave background.
Measuring on ice: Researchers create 'smart' ice skating blade
An ice skating blade that informs figure skaters of the stresses they are imposing on their joints has been developed by a group of researchers in the US.
Are weak values quantum? Don't bet on it
(Phys.org) —New work asserts that a key technique used to probe quantum systems may not be so quantum after all, according to Perimeter postdoctoral researcher Joshua Combes and his colleague Christopher ...
Radio telescopes settle controversy over distance to Pleiades
Astronomers have used a worldwide network of radio telescopes to resolve a controversy over the distance to a famous star cluster—a controversy that posed a potential challenge to scientists' basic understanding ...
World's best thermometer made from light
(Phys.org) —University of Adelaide physics researchers have produced the world's most sensitive thermometer – three times more precise than the best thermometers in existence.
Hubble extends stellar tape measure 10 times farther into space
(Phys.org) —Using NASA's Hubble Space Telescope, astronomers now can precisely measure the distance of stars up to 10,000 light-years away—10 times farther than previously possible.
Gravity measurements confirm subsurface ocean on Enceladus
In 2005, NASA's Cassini spacecraft sent pictures back to Earth depicting an icy Saturnian moon spewing water vapor and ice from fractures, known as "tiger stripes," in its frozen surface. It was big news ...
New study finds 'geologic clock' that helps determine Moon's age
An international team of planetary scientists determined that the Moon formed nearly 100 million years after the start of the solar system (4.470 billion years ago), according to a paper to be published April ...
Surface of Titan Sea is mirror smooth, scientists find
New radar measurements of an enormous sea on Titan offer insights into the weather patterns and landscape composition of the Saturnian moon. The measurements, made in 2013 by NASA's Cassini spacecraft, reveal ...
Most precise measurement of electron mass made
Scientists in Germany said Wednesday they had made the most precise measurement yet of the mass of the electron, one of the building blocks of matter.
Earth's core reveals an inner weakness
(Phys.org) —The word "core" conjures up an image of something strong. However, new experiments show that the iron found in the Earth's core is relatively weak. This finding is based on x-ray spectroscopy ...