Cell phones used to detect cosmic rays worldwide

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Discussion Overview

The discussion centers on the use of cell phones to detect cosmic rays, highlighting the development of apps that utilize smartphone camera lenses for this purpose. The scope includes outreach and educational applications, as well as technical aspects of the detection methods employed.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants note that there are more active cell phones than humans, suggesting a potential for widespread cosmic ray detection.
  • One participant mentions an app that has been developed to store cosmic ray detections, which has been utilized in various countries including Iceland, Uzbekistan, and Uganda.
  • Another participant points out that there are two different groups and apps involved: the Distributed Electronic Cosmic-ray Observatory (DECO) and Cosmic RAYs Found In Smartphones (CRAYFIS), indicating a diversity in approaches.
  • A participant shares personal experience with both apps, describing them as somewhat unreliable on their device.
  • There is speculation that advancements in detector design and imaging processing may render these smartphone apps obsolete in the future.

Areas of Agreement / Disagreement

Participants express differing views on the reliability and future viability of the apps, with some suggesting they may be short-lived while others focus on their current educational value. No consensus is reached regarding their practical applications or effectiveness.

Contextual Notes

Limitations include the potential unreliability of the apps as experienced by some users, and the dependence on specific smartphone models for detection efficacy. The discussion also reflects a mix of theoretical proposals and practical implementations without resolving the effectiveness of each approach.

Who May Find This Useful

Individuals interested in cosmic ray detection, smartphone technology applications in science, and educational outreach in physics may find this discussion relevant.

Hornbein
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There are now more active cell phones than humans. (?) The camera lenses of cell phones can detect cosmic rays. An app has been created that stores such detections in a data base. The app has been used in Iceland, Uzbekistan, and Uganda. There is no apparent practical use, it is for "outreach and education."

http://arxiv.org/abs/1510.07665
 
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It's also 2 different groups/apps- Distributed Electronic Cosmic-ray Observatory (DECO) at the University of Wisconsin (this thread), and Cosmic RAYs Found In Smartphones (CRAYFIS) at University of California, Irvine (the other thread). I played around with both of them late last year and found them both to be a bit flaky on my ASUS table.

These types of apps will probably be short-lived as advances in detector design and imaging processing will eliminate these types of artifacts in the images.
 

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