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Spiral scratches on contact lenses can turn them into multifocals

New Scientist

Inscribing a spiral in the centre of a contact lens seems to create optical vortices that interact so that the lens provides a clear image of objects at all distances

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Contact electrification explained at last

Physics World

An apparently simple physics phenomenon known as contact electrical charging turns out to be far more complicated than was previously thought, according to new experiments by researchers at the University of Duisburg-Essen in Germany. Contact electrification can occur whenever two surfaces touch. Contradiction to established theory.

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Bird flu confirmed in person who had contact with infected dairy cows

New Scientist

A person in Texas has been infected with bird flu after exposure to dairy cows who had the virus – it is the first time a human has contracted the disease from a mammal

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NASA Detects 'Heartbeat' from Voyager 2 Spacecraft after Losing Contact

Scientific American

A glitch may have silenced NASA’s Voyager 2 spacecraft until mid-October—but a “heartbeat” signal offers hope for reestablishing contact earlier

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Food Contact Chemicals Database

Environmental News Bits

The Food Contact Chemicals database (FCCdb) contains an extensive set of intentionally added food contact chemicals (FCCs), with hazard and regulatory information included where available. The FCCdb is freely downloadable and searchable as a Microsoft Excel file from the Zenodo repository.

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NASA Detects 'Heartbeat' from Voyager 2 Spacecraft after Losing Contact

Scientific American

A glitch may have silenced NASA’s Voyager 2 spacecraft until mid-October—but a “heartbeat” signal offers hope for reestablishing contact earlier

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NASA has regained contact with Voyager 2 after losing it for a week

New Scientist

After accidentally turning the Voyager 2 spacecraft away from Earth and losing contact with it, NASA engineers have now heard a “heartbeat signal” that shows it is still okay

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