![]() Which form predominates, and hence which outcome is more likely, is influenced by the angle of the Earth’s magnetic field, allowing the robin to detect if it is heading towards the equator or away from it.Īnd it turns out we, too, harness quantum effects. This shuffling creates a system that exists, thanks to some quantum jiggery-pokery, in two forms at once – each of which leads to a different outcome in the reaction that follows. The theory goes that the eye of a robin contains a chemical that, when it absorbs light of the right energy, can shuffle its electrons around. Indeed the internal compass that enables female robins to migrate in the winter relies on a curious capability that wouldn’t sound out of place in an X-Men line-up: magnetoreception. ![]()
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