Tag Archives: conservation of energy

Science of Anime: Spiral Power

In Gurren Lagann, it often seems like almost nothing is impossible, and the things that are impossible still happen anyway. Examples (and spoilers):

So in this case, maybe the question should be just how many “exceptions” to the laws of physics do we have to suspend disbelief for when we watch this series?

Would you believe just one?

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Science of Anime: Equivalent Exchange

In Fullmetal Alchemist, the most fundamental law of alchemy is Equivalent Exchange; like most real physical laws it’s not always phrased the same, but the basic idea is “To gain something, something of equal value must be given”.

The most-heard phrasing is from the first anime and seems excessively human-centric: “Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is alchemy’s first law of Equivalent Exchange.”

In alchemy that does not involve living beings, this is typically seen as a conservation law; elements are only rearranged, not created or destroyed.

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