It's not Einsteins law it's Plank law combined with Poincarés Mass EM
mass energy relation.
See : https://en.wikipedia.org/wiki/Henri_Poincaré#Mass–energy_relation
The formula E=MC^2 has first been found by Poincaré!
J.W.
Am 09.05.20 um 19:33 schrieb Terry Blanton:
A new door to the quantum world has been opened: When an atom absorbs
or releases energy via the quantum leap of an electron, it becomes
heavier or lighter. This can be explained by Einstein's theory of
relativity (E = mc2). However, the effect is minuscule for a single
atom. Nevertheless, the team of Klaus Blaum and Sergey Eliseev at the
Max Planck Institute for Nuclear Physics has successfully measured
this infinitesimal change in the mass of individual atoms for the
first time. In order to achieve this, they used the ultra-precise
Pentatrap atomic balance at the Institute in Heidelberg. The team
discovered a previously unobserved quantum state in rhenium, which
could be interesting for future atomic clocks. Above all, this
extremely sensitive atomic balance enables a better understanding of
the complex quantum world of heavy atoms.
https://phys.org/news/2020-05-successfully-infinitesimal-mass-individual-atoms.html
--
Jürg Wyttenbach
Bifangstr.22
8910 Affoltern a.A.
044 760 14 18
079 246 36 06