The second law of thermodynamics is one of the most fundamental principles in physics, governing why heat flows in a particular direction and why perpetual motion machines are impossible.
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Which nostalgic British school dinner would you happily eat again as an adult?
π½οΈ Food & Drinks Β· 24 votes
Which British doctor first successfully used a blood transfusion between humans in 1818 to treat postpartum haemorrhage?
π©Ί Health Β· 24 votes
Which classic British high street shop do you miss the most?
π History Β· 24 votes
Which everyday phenomenon did Lord Rayleigh explain in the 1870s, earning him a Nobel Prize years later?
π³ 26 votes