anti-gravity

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  • anti-gravity-ion-drive-floating

    ~ electrokinetic / electrogravitic ion thruster ~ “anti-gravity” or something else? ~ unusual science fair project kit

    $197.00$247.00
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    On the Parallel Propulsion Researches of Tesla and J.J. Thomson by William Lyne

    $47.00 $27.00
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    Gravity Control With Present Technology by David Alzofon

    $47.00 $37.00
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