Entropy & 2nd Law of Thermodynamics - Explained in Simple Terms 

In this lesson, we will discuss the second law of thermodynamics in physics. We discuss the concept of disorder, and the states of a system. We discuss that through collisions or other mechanisms, systems in nature tend to increase their disorder. We measure the disorder through the concept of entropy, or number of microstates per macrostate. We discuss that entropy of the universe is always increasing. Locally a system can decrease its entropy, but only at the expense of the larger encompassing system's entropy increasing even more so that the net entropy still increases over time.
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