Comments by "Liam" (@1495978707) on "Real Engineering" channel.

  1. You can’t just plug in the average velocity to get average energy, you have to find the average of v^3, which is not the same thing
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  2. I appreciate that you featured Alec. Perfect collab I think
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  3. Even if the engine is sideways, atmospheric pressure could still push it. The reason for double action is that the steam (which is at a significantly higher pressure than atmospheric) is acting on every stroke. This difference is similar to the difference in power per size from a 4 stroke engine to a 2 stroke engine. Steam locomotive engines had at least two cylinders, meaning four power strokes per revolution. This is partly for power, but it is necessary for the engine to be self starting. This means that the engine is always in a power stroke.
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