Because Albert Einstein was so well-known and regarded for his theory of relativity, his many other accomplishments are often overlooked. Einstein was interested in everything, and he spent part of his time figuring out how to improve existing gadgets. He held quite a few patents, including one for a refrigerator that would make the appliances much safer.
In the 1920s, nascent refrigerators used highly toxic, corrosive, or flammable compounds like sulfur dioxide or methyl formate as refrigerants. When passed through tubes and chambers while being pressurized and depressurized, these chemicals could efficiently cool a target chamber. However, moving them…
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