• So, in a sense, it says, you know, if you wanted to build a boat that took energy out of the warmth of the air to sail around the world, you can do that.

    因此,某种意义上说,它宣称如果你想要造一艘船,通过从空气中获取热量,这是可以做到的。

    麻省理工公开课 - 热力学与动力学课程节选

  • Somehow, if you could manufacture a really smooth frictionless surface, that if you took a hockey puck or something and an air cushion and you give it a push, in some idealized world, it'll travel forever.

    如果你制造一个绝对光滑无摩擦的表面,然后在上面放个冰球或者别的什么,或者气垫,然后推它一下,在理想条件下,它会永远运动下去

    耶鲁公开课 - 基础物理课程节选

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