Equation 4 · Part 1 · The Valley of Stability Is a Fitness Landscape
Symbol B
What this part means
B is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
B is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol B→Article meaning
The passage around this formula
The quantity that plays fitness’s role has a name in nuclear physics already: binding energy per nucleon, B(A,Z)/A , where A = N + Z is the mass number. It is the energy that would have to be supplied to disassemble a nucleus into Z free protons and N free neutrons, divided by the number of nucleons, and a higher value means a more tightly bound, lower-energy configuration — precisely the sense in…
Learn the underlying idea
A function assigns an output to each allowed input. The expression f(x) means “apply f to x”.
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Sources cited in the surrounding passage
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