Equation 11 · Part 2 · The Valley of Stability Is a Fitness Landscape
Symbol A^2/3
What this part means
/3 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
/3 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 A^2/3→Article meaning
The passage around this formula
…neighbors, so binding energy grows roughly in proportion to the number of nucleons, the way a population’s raw fitness might scale with sheer numbers before any structural penalty is applied. The surface term, - , subtracts a cost proportional to surface area, because nucleons at the boundary have fewer neighbors to bind to — a tax on being exposed at the edge of the configuration, heaviest for small A where the surface-to-volume ratio is largest. The Coulomb term, - Z(Z-1)/ , is a pure…
Learn the underlying idea
An exponent tells how a base is used in multiplication. In x³, x is the base and 3 is the exponent: x³ = x × x × x.
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Sources cited in the article section
- [11] Zur Theorie der Kernmassen ↗
- [13] The atomic nuclide with the highest mean binding energy ↗
- [1] The AME 2020 atomic mass evaluation (I). Evaluation of input data, and adjustment procedures ↗
These citations provide research context; check each source for the exact claim it supports.