What is One Degree? Temperature and Scientific Measurement

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What exactly is a degree of temperature? How is it defined and measured in the strictest scientific sense? Will answering these questions shed light on the complexities of climate change? This program explores the mysteries of temperature and energy with engaging demonstrations and high-level expert commentary. Beginning with a visit to Britain's National Physical Laboratory, the institution tasked with formally defining one degree, the video looks at the atomic aspects of temperature and their fundamental relationship with molecular energy. It also investigates extremes of temperature-from millionths of a degree above absolute zero in low-temperature test facilities to JET's fusion laboratory work, which has produced some of the highest temperatures recorded. Finally, the film examines the relationship between the Sun's energy and temperatures on Earth.