The balance of power theory in suggests that may secure their by preventing any one state from gaining enough to dominate all others. If one state becomes much stronger, the theory predicts it will take advantage of its weaker neighbors, thereby driving them to unite in a defensive . Some maintain that a balance-of-power system is more stable than one with a dominant state, as aggression is unprofitable whe.
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where the solar spectrum is represented by = (E) assuming . one pass of sunlight through the device with an absorptance of = η(E, TCell) = 1 exp( −αW). Note that this de − assumes no re flection finition at the surface of the. . Notes Views expressed in this Viewpoint are those of the authors and not necessarily the views of the ACS. The authors declare no competing nancial interest. fi
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