Equation "Hydrogen spectral series mnemonic" gives for example from principal quantum number 1 to 2 a difference:
which with Planck-Einstein relation gives about 121.6 nm ( Hz), which is a reasonable match with the value of 121.567... from the NIST Atomic Spectra Database.
Pull request by Ciro Santilli 40 Updated 2025-07-16
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Figure 1.
The Men Who Stole the World by Benoît Bringer
. This timestamp contains a good explanation of how banks were knowingly reselling bad loans at incredible profits. It features Richard Bowen, previously from Citi Group compliance.

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