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Old October 18th 16, 04:44 AM posted to sci.space.policy
Sylvia Else
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Default Emdrive might change the law of inertia (for the Earth too!)

On 17/10/2016 8:09 PM, Non Newtonian Propulsion wrote:
Il giorno lunedì 17 ottobre 2016 02:57:05 UTC+2, Sylvia Else ha
scritto:
On 16/10/2016 8:32 PM, Non Newtonian Propulsion wrote:
Il giorno giovedì 13 ottobre 2016 02:58:23 UTC+2, Sylvia Else ha
scritto:
On 12/10/2016 7:37 PM, Non Newtonian Propulsion wrote:


For the fact that action reaction violation need the change
of the first law of newtonian inertia and for the fact that
is in contact with the terrestrial environment

https://neolegesmotus.wordpress.com/...s-another-law/




It conveniently assumes that it's possible to change the charges on such
a time-scale without the resulting magnetic fields totally
negating the effect.

A full analysis will show either that there's no net force, or
that the change in momentum is matched by the momentum carried
off as a result of a net radiation of electromagnetic waves in
the opposite direction.

Oh, and the fact that this thing will inevitably radiate
electromagnetic waves means that it requires a constant input
of power.

Sylvia.

If one assumes that the principle of action and reaction can be
overcome in electrodynamics it must accept the consequences also
on the law of inertia. And the change of the law of inertia is a
great opportunity to shorten the time of interstellar travel

E.Laureti


I don't know why one would make such an assumption, given the lack
of experimental evidence to support it.

It should also be noted that any anisotropic radiator experiences a
net force, completely in accordance with current theory. To be
compelling, an experiment has to show a force in excess of that
that would be produced by radiation for a given power input.

Sylvia.


The essence of the problem is that in the electrodynamic principle of
action and reaction does not make sense to theoretical level. As it
says W. Moretti in www.asps.it/azione.htm

"Now in electrodynamics if the two bodies are charged, because of the
delay effect you mention due to the mediation of the electromagnetic
field, the third principle as I have set out above is not the case.
The EM field can not 'be considered a body for various reasons (not
even in the continuous theory mainly because 'does not define a field
of speed' ...) for which the third principle can not 'even be
formulated for the system charges + EM field. “



This takes us back to the assumption that it's possible to charge the
bodies without thereby having a current which creates a magnetic field.
If you assume the impossible, then all bets are off.

Sylvia.