From: runningman@writeable.com
> On 2024-02-20 1:51 p.m., The Running Man wrote:
>>> For some reason, the PNN folks who were quite active on this group do
>>> not seem to have posted anything in a long while. Did they run out of
>>> active people, or money? Or did they finally figure out it doesn't work
>>> and quietly closed shop?
>>> --
>>> /* * * Otto J. Makela * * * * * * * * * */
>>> /* Phone: +358 40 765 5772, ICBM: N 60 10' E 24 55' */
>>> /* Mail: Mechelininkatu 26 B 27, FI-00100 Helsinki */
>>> /* * * Computers Rule 01001111 01001011 * * * * * * */
>>
>> What does PNN stand for?
>>
>
> It stands for Propulsione Non Newtoniana (Italian, meaning Non-Newtonian
> Propulsion). A group of Italian people claiming that they have a
> propulsion system using no reaction mass. Something like a microwaves
> bouncing around in a closed cavity that they claim, without explaining
> the physics behind it, that it produces acceleration. They have video
> showing that it gives if I recall correctly some 200 mN of force. We
> tried to explain to them that because their microwaves heat one side of
> their apparatus more than the other side, the air is heated more on one
> side than the other. This differential in air temperature can explain
> the force that they measure, therefore, outside an atmosphere it
> wouldn't work. But they don't want any of that, they are sure that their
> "invention" will revolutionize rocketry.
>
>
> Alain Fournier
>
I once read a (fiction) book about futuristic spaceships and they claimed that
a mass-less propulsion drive could be made by a huge electromagnet which would
change its polarity so fast that the EM flux didn't have time to dissipate,
thereby creating a
repelling force.
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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