'Ff'lo (fflo) wrote,
'Ff'lo
fflo

Always remember & never forget . . .

... the Fermi Golden Rule:

$$B(\omega,v-v_*)=\frac{1}{8\pi^2}|\omega\cdot(v-v_*)||{\widehat \phi}
((\omega\cdot(v-v_*))\omega)|^2$$

---you know, where the hat $\sphat$ denotes the Fourier transform and $\phi$ is a two-body interaction potential.
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  • Oops

    I thought I'd bought that movie ticket for a screening this afternoon, but when I got downtown I discovered that my ticket is actually for…

  • I up and bought a ticket for a movie at the cinema.

    It's a movie I could watch free on TV, but Frances told me to see it on the biggest screen possible. COVID is still oddly prevalent around here,…

  • Postcard of the Day

    …