Shiitake mushroom as a magnet?

Thai designers make interesting experimentation. At a department store in Bangkok, I found several stationary items and kitchen utensils designed by Qualy, seems to be a local Thai design company. Although this company introduced a series of interesting products including owl-shaped salt and pepper shaker or bear-shaped one, the most interesting one is mushroom-shaped magnetic.    …

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Two different ways to design a better fire extinguisher

Since we spend most of our time in buildings, we are literally surrounded by fire extinguishers. It consists of a hand-held cylindrical pressure vessel containing an agent which can be discharged to extinguish a fire (Wikipedia). In general, we do not pay attention to them until needed. For me, I have never used any fire extinguisher…

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