xkxd #2860: Decay Modes ( imgs.xkcd.com )
Alt text:
Unlike an Iron Age collapse, a Bronze Age collapse releases energy, since copper and tin are past the iron peak on the curve of binding energy.
![](https://kbin.pithyphrase.net/media/cache/resolve/entry_thumb/33/d3/33d34748791b074dc9d787dfad0410b003e98d015e3f2e10022c2d1cc4dcbe0a.png)
Alt text:
Unlike an Iron Age collapse, a Bronze Age collapse releases energy, since copper and tin are past the iron peak on the curve of binding energy.