X-ray vision

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In science fiction stories or superhero comics, X-ray vision is the supernatural ability to see through normally opaque physical objects at the discretion of the holder of this superpower. The most famous possessor of this ability is DC Comics' iconic superhero character, Superman.

In fiction

Among the best known figures with "x-ray vision" are the fictional

Lynceus of the Argonauts possessed a similar ability.[2][3]

Although called X-ray vision, this power has little to do with the actual effect of

X-ray films are made as x-rays pass through an object and then through the x-ray film. The images seen on x-ray film are "shadows" of the objects the x-rays passed through on their way to the film). As depicted, x-ray vision is actually more of a form of the supposed psychic ability of remote viewing
.

In reality

terahertz waves). Such devices are being deployed in some airports as a way of detecting contraband
, such as guns, knives, and any other weapons in particular which may be carried beneath a person's clothing, bag, etc. The devices have created some degree of controversy from personal privacy advocates who worry about screeners being able to see people "naked." There also exist certain night-vision equipped cameras that can be modified to see through clothing at a frequency just below visible light. Such imaging is not true x-ray vision, but rather shows variations in heat radiation rising from the skin beneath the clothing which can provide some detail of the body beneath.

In comic books in the latter half of the 20th century, there often appeared an advertisement for "X-ray specs" which displayed the face of a smiling boy wearing glasses with spirals on the lenses looking at his hand through which he could see the bones.

While X-rays cannot be used in practice to enable seeing objects through walls, researchers have recently shown how everyday wireless signals, such as wi-fi, can be used to achieve x-ray vision.[4][5][6][7][8][9][10][11]

See also

  • Wall hack

References

  1. ^ Glen Weldon; Michael Kantor. Superheroes!:Capes cowls and the creation of comic book culture. p. 87.
  2. ISBN 9781137347312
    .
  3. ISBN 9780521466189
    .
  4. ^ Y. Mostofi and P. Sen, "Compressive Cooperative Sensing and Mapping in Mobile Networks" American Control Conference, pages 3397-3404, June 2009.
  5. ^ Y. Mostofi, "Cooperative Wireless-Based Obstacle/Object Mapping and See-Through Capabilities in Robotic Networks" IEEE Transactions on Mobile Computing, DOI: 10.1109/TMC.2012.32, January 2012.
  6. ^ A. Banerjee, D. Maas, M. Bocca, N. Patwari, and S. K. Kasera, "Through Wall People Localization Exploiting Radio Windows" arXiv:1307.7233, submitted 27 July 2013.
  7. ^ J. Wilson and N. Patwari "Through-Wall Tracking Using Variance-Based Radio Tomography Networks" Sep 2009
  8. ^ Fadel Adib and Dina Katabi, "See Through Walls with WiFi!" ACM SIGCOMM, Hong Kong, August 2013.
  9. ^ Qifan Pu, Sidhant Gupta, Shyamnath Gollakota and Shwetak Patel, "Whole-Home Gesture Recognition Using Wireless Signals" ACM MOBICOM, October 2013.
  10. ^ Fadel Adib, ChenYu Hsu, Hongzi Mao, Dina Katabi and Fredo Durand, "Capturing the Human Figure Through a Wall" ACM SIGGRAPH Asia, November 2015.
  11. ^ Donny Huang, Rajalakshmi Nandakumar, and Shyamnath Gollakota, "Feasibility and Limits of Wi-Fi Imaging" ACM SenSys, November 2014.
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