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Equation 85 · Part 2 · No Particle Without a Cosigner

Symbol g

u g(u)=24 u2/(e2πu−1)u\,g(u) = 24\,u^2/(e^{2\pi u}-1)
gg

What this part means

g is part of the quantity the equation computes from the expression on the right.

Its job in the formula

g is part of the quantity the equation computes from the expression on the right.

The passage around this formula

…equation that fixes the peak of a Planck spectrum weighted by an extra power of frequency. Solved by Newton’s method to five-figure precision, the nontrivial root is u∗u^\ast ≈\approx 0.25363 , at which u∗u^\ast g(u∗u^\ast) ≈\approx 0.3937 . The leading-order sensitivity is therefore

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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 article section

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