Smells are caused by volatile compounds that stimulate receptors in our nose. There is a large variety of such compounds with a great diversity of molecular structures. But many of the smells...
As a kid I grew up being told that I had to let food cool down before putting it in the fridge. I was under the notion that placing warm food directly in the refrigerator could cause the other...
The walls of refrigerators have to be heavily insulated in order to maintain efficient cooling. Polyurethane foam insulation has been the classic material used for this purpose and guess what it...
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