Re: The HOAX of E=mc?. Documented history since 1898.

On 11/14/2024 02:51 AM, J. J. Lodder wrote:

Ross Finlayson <ross.a.finlayson@gmail.com> wrote:
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On 11/13/2024 02:26 PM, J. J. Lodder wrote:

rhertz <hertz778@gmail.com> wrote:
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That there was a relationship between energy and mass was suspected
since the last years of XIX century.
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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/c? where E is the total energy of the radiation.
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https://www.bjp-bg.com/papers/bjp2019_2_081-093.pdf

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There you go again, clueless as usual.
Maxwell himself already predicted radiation pressure,
and he knew that EM fields must have energy.
Again, 'everyone' knew that in the late 19th century.
It was used extensively to extend thermodynamics
to include EM fields.
Maxwell was hardly original in this.
Kepler already postullated radiation pressure,
from the observation of comet tails being blown away from the sun,
but he could not quantify it.
Lebedev confirmed Maxwell's prediction quantitatively in 1900.
Poincare's thought experiment is merely a demonstration,
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Jan
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Yeah, according to SR, the latest in the line of "solar sail"
experiments should be doing perfectly fine.

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??? Why latest? Radiation pressure (and radiation recoil)
is routinely observed and accounted for
in the observation and calculation of satellite orbits.
It may cost real money, in fuel for station keeping,
so it must be real,
>
Jan
>

So, Casimir is as much photometric as electromagnetic?
The visible light is really kind of special, and what
with it having zero charge and zero mass, that the
electromagnetic wave-particles as they may be as well
have energy indicated by frequency and wavelength,
about radiation like chaleur and heat and radiation
like pull-downs in the electrical field, have a sort
of usual notion that heat's 0 and the electrical field 1.
Then, with regards to information and the tachyonic,
Einstein long ago split GR and SR into spatial and "spacial",
and put GR first, and clarified SR as "local",
or at least in his theory of "relativity, of motion",
and as with regards to the L-principle, that light's speed,
in deep space, in a vacuum, is a constant, that being it.
So fluctuations in the electrical field, and
warmth in the space,
are quite two different things,
and WMAP of course found in the CMBR
both, BOTH: heat and microwaves.
Which "the theories" did NOT predict.
Cerenkov is another example of the
braking radiation about the nuclear radiation,
Brehmsstrahlung and the braking radiation.
Coriolis of course is merely a global mechanical thing,
then though that's there's Compton.
Casimir / Cerenkov / Compton: light is _not_ electromagnetic.