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Earth’s Mysterious Magnetic Field, Stored in a Jar
- pouta 10y agoFor a moment I saw .jar which would be a surprising title
- marzell 10y agoI'd click on that.
- mirimir 10y ago> Today, the scientific consensus is that the field arises in Earth’s outer core, where the movement of liquid iron creates a giant, self-perpetuating electromagnetic dynamo, ... I get that this is in the New Yorker, but "self-perpetuating" is just wrong. It's dissipating rotational energy, I think. I believe that "self-exciting" is more accurate. Yes?