Ian Randall
Ian Randall
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Fascinating images show differences between how you and your pets see

Fascinating images show differences between how you and your pets see

Fascinating images have revealed the difference between how you and your beloved pet — whether cat, fish or tarantula — sees your surroundings at home. The photos — from US-based digital marketplace HomeAdvisor — show not only life in different colours but through various strengths of vision and numbers of eyes. Understanding how animals view the world can help pet owners to pick toys, beds and food bowls in colours that attract the most attention for their little friends. Fascinating images have revealed the difference between how you and your beloved pet sees your surroundings at...

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Ian Randall
Jan 18
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London bus-sized asteroid missed us by 240 miles on Friday 13

London bus-sized asteroid missed us by 240 miles on Friday 13

 Friday, Nov 20th 2020| 25k An asteroid the size of a bus missed the Earth by just 240 miles (386 km) on Friday 13th — but was not detected until the next day, astronomers have revealed.The space rock, dubbed '2020 VT4', was only spotted 15 hours after its closest approach by the Asteroid Terrestrial-impact Last Alert System on Mauna Loa, .Had it come much closer, the 16–33 feet (5–10 m) wide body — as estimated from its brightness — would have burned up in the atmosphere over the South Pacific.Its orbit brought it about the same distance from the Earth as the International Space Station,...

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Ian Randall
Nov 19
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Fastest possible speed of sound is 22 miles per second

Fastest possible speed of sound is 22 miles per second

 Friday, Oct 9th 2020| 10 The fastest possible speed of sound — 22.4 miles per second, nearly twice its speed in air at the Earth's surface — has been calculated for the first time. British researchers found that such speeds are only possible, however, when passing though metallic hydrogen, as found in the core of the .Sound moves quicker through solids than air because of its higher density. of special relativity set the absolute maximum speed at which an electromagnetic wave can travel as 186,282 miles a second — the speed of light.But it was not known whether sound waves also had an...

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Ian Randall
Oct 9
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First atomic-scale map of human enamel shows how cavities form

First atomic-scale map of human enamel shows how cavities form

 Wednesday, Jul 1st 2020| 19 The first atomic-scale map of human enamel is helping to reveal how cavities form — and may even help experts reverse tooth decay, researchers have claimed.Enamel is the outer protective layer on our teeth — covering the entire crown — and has a considerable hardness thanks to its high mineral content. Researchers from the US found that the internal structure of the smallest parts of enamel are like 'the world's tiniest sandwich', with a more soluble core.The findings could help pave the way to methods to toughen up tooth enamel — spelling the end of both...

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Ian Randall
Jul 1
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