This is a list of spurious inventions, technologies which are generally considered to not possess their claimed capabilities, to be hoaxes, or to not have ever existed in the first place.

Spurious invention Description
Angel Light According to its inventor, this device could make walls, hands, and stealth shielding transparent.
Black box Popular name for a diagnostic machine made by Albert Abrams. It supposedly could diagnose diseases based on their special vibrations that can be sensed along someone's spine.[1]
Chronovisor A time viewer claimed to have produced photographs and recordings of the ancient past.
Cloudbuster A device that could purportedly make rain through manipulating atmospheric orgone, a kind of energy considered to be pseudoscientific.[2]
Edison A device claimed to produce numerous analyses of blood very quickly using very small samples.
Teleforce A weapon, also known as Nikola Tesla's death ray or peace ray, that would accelerate pellets of material to a high velocity so as to cause significant damage from a long distance.[3]
Nikola Tesla electric car hoax Alleged advanced electric car.
Fleischmann–Pons cold fusion experiment Attempt to cause nuclear fusion using electrolysis to achieve the high compression ratio and mobility of deuterium.[4]
Kryakutnoy Fictional inventor of hot air balloons.[5]
Newman energy machine Supposed free-energy machine invented by Joe W. Newman.[6]
Perpetual motion machines Hypothetical machines that do not need any added energy or force to continue motion. All attempts as of yet are considered spurious, and such a machine is considered impossible by modern thermodynamics.[7]

    See also

    References

    1. ↑ Williams, William F., ed. (2000). Encyclopedia of Pseudoscience. Book Builders Incorporated. p. 37. ISBN 0-8160-3351-X.
    2. ↑ Williams, William F., ed. (2000). Encyclopedia of Pseudoscience. Book Builders Incorporated. p. 55. ISBN 0-8160-3351-X.
    3. ↑ Reece, Gregory L. (2009). Weird science and bizarre beliefs : mysterious creatures, lost worlds, and amazing inventions. I.B.Tauris & Co Ltd. pp. 200, 203. ISBN 978 1 84511 756 6.
    4. ↑ Williams, William F., ed. (2000). Encyclopedia of Pseudoscience. Book Builders Incorporated. pp. 56–57. ISBN 0-8160-3351-X.
    5. ↑ Williams, William F., ed. (2000). Encyclopedia of Pseudoscience. Book Builders Incorporated. p. 236. ISBN 0-8160-3351-X.
    6. ↑ Williams, William F., ed. (2000). Encyclopedia of Pseudoscience. Book Builders Incorporated. p. 236. ISBN 0-8160-3351-X.
    7. ↑ Williams, William F., ed. (2000). Encyclopedia of Pseudoscience. Book Builders Incorporated. pp. 248, 262. ISBN 0-8160-3351-X.
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