I little DIY for the teachers.
The idea is simple: “The fan on top is blowing up and that means it's sucking air in through the filters on the sides,” explained Blair, a former physics grad student and an open-source enthusiast. As the air is pulled through the filters, the vast majority of virus-laden particles are removed.
DIY: How To Build A Cheap, Effective Classroom Air Filter
This air purifier can be made in 20 minutes and test suggests it's highly effective at removing virus-laden particles from the air.
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