Entropy shown by heat loss

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Entropy shown by heat loss

Entropy shown by heat loss. Entropy is a measure of the amount of order or disorder in a system, as well as how reversible a change is. This is illustrated here by the hot tea (left) losing heat to become a colder cup of tea (right), a process that can only be reversed by adding energy. The teas energy being dissipated is due to entropy increasing (the second law of thermodynamics). Eventually, the entire energy of the universe will spread out in what is known as the heat death of the universe, a direct consequence of entropy increasing to a maximum

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6335141

© VICTOR DE SCHWANBERG/SCIENCE PHOTO LIBRARY

Change Cooling Entropy Heat Heat Loss Hot Drink Increase Increasing Maximum Order Saucer Theory Thermodynamic Thermodynamics Concepts Disorder Dissipating Ordering Physical Reversible

EDITORS COMMENTS
This print from Science Photo Library beautifully captures the concept of entropy through heat loss. Entropy, a measure of order or disorder in a system, is showcased here as the hot tea on the left gradually loses heat and transforms into a colder cup of tea on the right. This process can only be reversed by adding energy, highlighting the irreversibility of entropy. As the tea's energy dissipates and its temperature decreases, we witness an increase in entropy according to the second law of thermodynamics. This fundamental principle states that entropy always tends to increase over time. In fact, this image serves as a visual representation of how eventually, all energy in the universe will disperse completely – known as the "heat death" – which is an ultimate consequence of entropy reaching its maximum level. The saucer beneath symbolizes both physical and conceptual aspects related to this phenomenon: cooling, ordering, increasing disorder, irreversible change, and statistical mechanics. It reminds us that even seemingly simple everyday occurrences like drinking tea are governed by profound scientific principles. Science Photo Library has masterfully captured this thought-provoking image that not only showcases thermodynamic concepts but also prompts contemplation about our universe's fate under increasing entropy.

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