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Face coverings made from layered cotton fabric likely slow the spread of COVID-19 better than synthetics – Phys.org

Researchers have completed a new study of how well a variety of natural and synthetic fabrics filter particles of a similar size to the virus that causes COVID-19. Of the 32 cloth materials tested, three of the five most effective at blocking particles were 1…

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New Time Dilation Phenomenon Revealed: Timekeeping Theory Combines Quantum Clocks and Einstein’s Relativity – SciTechDaily

A phenomenon of quantum mechanics known as superposition can impact timekeeping in high-precision clocks, according to a theoretical study from Dartmouth College,…

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Quantum mechanics allows for a clock to move as if it were simultaneously traveling at two different speeds. New research finds that this leads to a correction in atomic clocks known as “quantum time dilation.” Credit: Petra Korlevic
A phenomenon of quantum mechanics known as superposition can impact timekeeping in high-precision clocks, according to a theoretical study from Dartmouth College, Saint Anselm College and Santa Clara University.
Research describing the effect shows that superposition…

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You’ve Heard of Vantablack. Scientists Just Created ‘Super White’, And It’s Very Cool – ScienceAlert

Scientists have created a super white paint that is the yin to Vantablack’s yang.

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Scientists have created a super white paint that is the yin to Vantablack’s yang. 
While ultra black materials can today absorb more than 99.96 percent of sunlight, this new super white coat can reflect 95.5 percent of all the photons that hit it.
Instead of warming up under direct light, objects painted with this new acrylic material can remain cooler than their surrounding temperature even under the Sun, which could allow for a new energy-efficient way to control temperature inside buildings.

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Man guilty of murder outside Edinburgh City FC social club – BBC News

Paul Smith stabbed Andrew McCarron in the neck when he tried to calm down a disturbance outside Edinburgh City’s social club.

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image copyrightPolice Scotland
image captionAndrew McCarron, who was stabbed to death, was described by an employer as a “true gentleman”
A man who stabbed an electrician in the neck outside Edinburgh City FC’s social club has been found guilty of murder.
A jury heard Paul Smith, 43, was driven by an “obsessive hatred” of his ex-wife’s new partner.
A disturbance broke out when he went to the club where the man’s family were enjoying a night out in July 2019.
But the High Court in Edinburgh was…

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