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Video inside centrifuge shows we don’t fully understand fluid physics
The first ever camera footage from inside a centrifuge has revealed a new mystery in the physics of fluids. A centrifuge is a standard piece of laboratory equipment that spins fluid samples at high speed to separate out their components. For instance, centrifuging a blood sample will separate the red blood cells from the white…
Why you don’t need to bother raking up dead leaves from your lawn
Max belchanko/Shutterstock IT IS late autumn where I live in London – a time of year that sees millions of gardeners like me, across the northern hemisphere, donning their thickest jumpers and spending hours raking giant piles of leaves into plastic bags at the end of driveways. In the US alone, nearly 10 million tonnes…
Don’t Worry, It’s Just ‘Fire Ice’
The finding suggests that far more fire ice is vulnerable to climate-induced melt than scientists realized, and it could be a significant source of planet-warming gas in the future. “It’s a very, very, very large source of carbon,” says Davies. “What we’re showing is there are routes for that carbon to be released that we…
Cannabis can relieve pain short-term, but we still don’t know how
Is cannabis an effective painkiller? SciePro/Shutterstock Cannabis has a long history as a pain-reliever – it is mentioned in 3500-year-old medical texts from ancient Egypt. But there is still active debate over the extent of the drug’s analgesic properties. On the one hand, there is some evidence that cannabis can relieve certain types of pain….