Einstein's public refrigerator


The invention of the modern computer was due to the atomic bomb, while the idea of ​​the atomic bomb came when making refrigerators.


Einstein read the headline in 1926. In Berlin, a family, including children, died in their sleep. The reason was the refrigerator. The refrigerator cell was broken and the accident was caused by a toxic gas leak. Forty-seven-year-old Einstein spoke to his friend, scientist and inventor Leo Sellard. (Cellard is called Edison of high energy physics, particle accelerator and electron microscope were his ideas). They both deal with their confidence as they choose to embark on their play activities.


Refrigeration was the most serious science of the time and the race was on to reach the minimum temperature. The basic principle is that the gas in the piston is highly compressed. The temperature of the gas is compressed and rises. At this point, a liquid tube is passed through the jacket around it, which has a low boiling point. It turns around, sucks out the extra heat and boils. It needs energy to boil and sucking that energy cools the gas in the compressor. When it spreads back, the temperature is very low.


For the first time, Guinness used the scientists' experiment to store their beer. This was the beginning of home refrigeration technology. Gas compression refrigerators became common in Europe and the United States in the 1920s. There was a problem. The three gases used as coolants, ammonia, methyl chloride and sulfur dioxide, were toxic and were causing deaths. Einstein and Sellard invented another technology to compete with them. It was an absurd fridge. The method was to separate the mixture of three liquids with the help of flame. (Details from the link below). It ran on gas instead of electricity and without a motor. Einstein named it Public Fridge. The two scientists received 45 patents on three models. It later went into the background because of a "better" solution.


This better solution came from an unfortunate scientist magazine.


Cellard and Einstein needed the money from that refrigerator. Especially to Sellard, whose assets were confiscated by Nazi Germany. This income gave him time to think and work on physics. He had heard of experiments on neutrons. He began to think that if the uranium atom broke down and many neutrons were released that would absorb other uranium atoms, these extra neutrons would destabilize everything. The next one will break down and their refrigerators will emit large amounts of energy according to the partner's equation.


In it, Sellard first discovered the principle of the nuclear chain reaction, and unlike the refrigerator, it has dominated the world for decades to come. The decades in which science went far beyond harmless experiments. Which shook not only the concept of science in the public but also the concept of the world of scientists. Making the deadliest weapon became the epitome of science in different countries.


Sellard and Einstein wrote a letter to US President Roosevelt on July 12, 1939, about launching a nuclear program. Einstein was not allowed to come close to the project to build it, but Cellard remained part of the project to build it. (Both scientists were later part of the campaign against nuclear weapons).


Work has resumed on this design of Einstein and Sellard refrigerators. The small refrigerator was designed in 2016 to solve the problem of keeping vaccines safe by using this design so that in poor countries or in remote places where there is no uninterrupted power supply, the vaccine can be heated to the right temperature. To be placed on