Perpetual motion is one of the important physical concepts.

永久运动是重要物理概念之一。

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Knowing physical concepts well and correctly is the important premise and guarantee to learn physics well.

掌握牢固的、正确的物理概念是学好物理学的前提和重要保障。

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What ingredients in shampoo and beer make their foams stable, and what physical concepts control that stability?

到底是洗发水和啤酒里的什么成分让他们的泡泡如此稳定呢？是什么样的物理机制控制着这样的稳定性？

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These ideas go from concepts to physical products in the supermarket.

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People represent abstract concepts with more immediate physical stand-ins.

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For online and blended courses, LearnSmart Labs offers the closest thing available to an actual physical laboratory experience, enabling students to put the concepts they have learned in class to the virtual test without requiring access to a brick-and-mortar lab.

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