Can someone explain to me physically/technically why rooms in which refrigerators and freezers are installed need to be heated?

And what is the technical difference between devices that need at least 16°C and the more expensive ones that only need 10°C? Wouldn't it also be possible to produce devices that can cope with lower temperatures? Okay, you can just turn off the refrigerator in the winter. Can it tolerate lower temperatures when turned off?…

How strong is the freezing pressure when water expands into ice?

When water expands into ice, its volume increases by about 9% because it takes on a crystalline structure. I have seen an experiment before where water was filled into a steel ball and then placed in a nitrogen container (freezer). After the water expanded into ice in the steel ball, the steel ball burst like…