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Researchers measure near perfect performance in low cost semiconductors

The reproduction of quantum dots that absorb light from a near-by artist. Picture credits: Ella Marushchenko Small, easy-to-produce particles, called quantum dots, can soon replace more expensive single crystal semiconductors in advanced electronics in solar cells, camera sensors, and medical imaging equipment. Although quantum dots have begun to penetrate the consumer market – in the form of quantum dot television …

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Indian scientists measure 1.3 billion volt lightning, the strongest in history

A thunderstorm (not that measured in this study) from the International Space Station over the border between Senegal and Mali. Photo: NASA / ISS 16 (Wikimedia Commons) Scientists in India observed tempests of stress ever documented by a subatomic particle that you might not hear much about: the muon The researchers do that Telescope GRAPES-3, which measures muons, particles that …

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measure. High Court orders a suicide case in Michelle Carter

Alanna Durkin Richer, Associated Press Updated at 10:29 BOSTON (AP) – The Massachusetts Supreme Court has confirmed the involuntary killing of a young woman who has encouraged her boyfriend through dozens of Kill people short messages. The Supreme Court Court ruled Wednesday that the evidence had proved that Michelle Carter's behavior had caused the suicide of Conrad Roy III in …

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The Latest: Regulators Approve the PG & E Financing Measure

SAN FRANCISCO (AP) – The Most Recent Criticism of a Hurried Announcement Meeting Between California Regulatory Authorities and PG & E (All Local Times): 15:45 California regulators have approved a measure Pacific Gas & Electric Corp Permits The California Public Utilities Commission approved the request in a harsh last-minute session over the songs of the protesters, the "Shame!" Commissioners call …

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Shaky rings help scientists measure the days of Saturn

A day on Saturn takes 10 hours, 33 minutes and 38 seconds. This emerges from an article published in The Astrophysical Journal which used the rings of Saturn for calculation . , This is a few minutes shorter than older approaches to the gas giant's day, but the new schedule is consistent with earlier mathematical estimates. It has been difficult …

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Why scientists tried to measure all the bright starlight

Fermi-LAT view of the gamma-ray sky. Image: Fermi-LAT Astronomers announced this week that they wanted to measure all starlight in the universe. You may wonder why. Ultimately, they try to tell the story of the universe. "We wanted to know how the history of star formation works," said Kari Helgason, a scientist at the Max Planck Institute for Astrophysics in …

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Scientists measure the brightness of the universe more accurately

Based on this method, the sky would have the brightness of a 60W incandescent lamp seen from a distance of 4 km. It would be extremely weak, but not completely jet-black. Previous approaches relied on ultraviolet light from short-lived giant stars, but these were not as reliable as they might miss the weakest stars. The Blazar approach measures the light …

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Atomic clocks that are accurate enough to measure gravity

An older version of an ultra-stable atomic clock made from Ytterbium lattices on the NIST. Ytterbium atoms are generated in an oven (large metal cylinder on the left) and placed in a vacuum chamber in the center of the photo where they are manipulated with lasers and examined. The laser light is transported by five fibers to the clock (eg …

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Scientists build atomic clocks accurately enough to measure changes in space-time itself

Photo: N. Phillips / NIST Physicists have created atomic clocks that are so precise that they themselves can measure space-time deformations. We all do not experience the passing of time – time passes more slowly closer to a massive attraction, as theorized by Albert Einstein. And since gravity is usually interpreted as the way in which the mass itself distorts …

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