The HOAX of E=mc². Documented history since 1898.

That there was a relationship between energy and mass was suspected
since the last years of XIX century.
By 1899, Poincaré derived such a relationship by using a thought
experiment with a "light cannon" and its recoil, once it shot a pulse of
light. By equating the energy of the light pulse and the recoil of such
a cannon, it lead him to attribute to electromagnetic radiation a mass
equal to E/c² where E is the total energy of the radiation.
https://www.bjp-bg.com/papers/bjp2019_2_081-093.pdf
But Thomson, Lorentz, Heaviside and many others were closing the
approach to this concept by using measurements of the recently
discovered electron.
This was known by 1900 (values in c.g.s. system):
1. (Lorentz and others): Energy of an electron at rest E = e²/R
2. Charge e (Planck 1900): e = 4.69E-10 esu (g^1/2 cm^3/2 s^-1)
3. Ratio e/m (Thomson 1900): e/m = 6.32766E+17 esu/g
   OR  m/e = 1.58036E-18 g/esu
4. Mass of electron (1900): m = (m/e) e = 7.4119E-28 g
5. Radius of an electron (1907, Rutherford, others): R = 1.11E-14 cm
6. Energy stored in an electron (1907): E = 1.976E-05 erg or g.cm²/s²
1 erg = 6.2400E+11 eV
So, E = 12.329 MeV, by 1907.
******** ENTER RELATIVITY AND E = mc² ******************
Now, the history IS BEING RE-WRITTEN, because E = 0.511 MeV
IN WHAT WAY HISTORY IS RE-WRITTEN BY RELATIVISTS (SINCE WWII)?
They INVENTED the "classic radius of an electron",
Rc = 2.8179403227E-15 m (NIST and other agencies),
IN ORDER TO EQUATE NON-RELATIVISTIC ENERGY WITH E = mc².
In this FRAUDULENT WAY, AND ONLY BY CONSENSUS BETWEEN RELATIVISTS, IT
WAS POSSIBLE TO ACHIEVE WHAT WAS INCREDIBLE:
PRE-RELATIVITY VALUES = POST-RELATIVITY VALUES.
So, with electrons, for the last 80 years WAS FIXED THAT
E = e²/R = mc²  (c.g.s. system).
And this HOAX was completed by ERASING FROM NIST the radius of protons
(also neutrons). That presence COMPLICATED THE HOAX, so they censured
it. You can check at NIST.
EVEN WORSE: the actual radius of electrons have been measured recently
as being about 10E-18 m, but THIS put the pre-relativistic energy of an
electron about 1,000 times HIGHER than what E = mc² gives.
And other experiments, in the last 50 years, have "measured" the
electron's radius as low as 10E-21 m OR LOWER.
Actually, besides this primary HOAX in relativity, modern physicists
don't have a fucking idea of what the radius is.
What is certain is that, in QED and since 1946, Feynman and many others
solved the problem of INFINITIES (as radius of charged particles got
lower and lower) by RENORMALIZATION, which is more or less to replace
the points in QED that diverge to infinity by a given number (ad-hoc).
As Feynman said: IT WORKS. NOW SHUT UP AND CALCULATE!
This is what physics has become: A DISGUSTING FARCE.