File:Moons shodow in muons.gif

From Wikiversity
Jump to navigation Jump to search

Original file(828 × 616 pixels, file size: 21 KB, MIME type: image/gif)

Summary[edit]

An image of the shadow of the Moon in muons as produced by the 700m subterranean Soudan 2 detector in the Soudan Mine in Minnesota. The shadow is the result of approximately 120 muons missing from a total of 33 million detected in Soudan 2 over its 10 years of operation. The cross denotes the actual location of the Moon. The shadow of the Moon is slightly offset from this location because cosmic rays are electrically charged particles and were slightly deflected by the Earth's magnetic field on their journey to the upper atmosphere. The shadow is produced due to the shielding effect the Moon has on galactic and cosmic rays, which stream in from all directions. The cosmic rays normally strike atoms high in the upper atmosphere, producing showers of muons and other short lived particles.

Licensing[edit]

Description

An image of the shadow of the Moon in muons as produced by the 700m subterranean Soudan 2 detector in the Soudan Mine in Minnesota. The shadow is the result of approximately 120 muons missing from a total of 33 million detected in Soudan 2 over its 10 years of operation. The cross denotes the actual location of the Moon. The shadow of the Moon is slightly offset from this location because cosmic rays are electrically charged particles and were slightly deflected by the Earth's magnetic field on their journey to the upper atmosphere. The shadow is produced due to the shielding effect the Moon has on galactic and cosmic rays, which stream in from all directions. The cosmic rays normally strike atoms high in the upper atmosphere, producing showers of muons and other short lived particles.

Source

http://hepweb.rl.ac.uk/ppUKpics/POW/pr_990602.html and Wikipedia entry on Muons.

Date

March 31, 2000.

Author

J. H. Cobb et al. (The Soudan 2 Collaboration)

Permission
(Reusing this file)

Fair use claimed.


Copyright undetermined

This work is copyrighted. The individual who uploaded this work and first used it in an article, as well as subsequent persons who place it into articles, asserts that this qualifies as fair use of the material under United States copyright law.

This template must be accompanied by a {{Non-free media rationale}} justifying the assertion of fair use.

Note: The kinds of things that are considered acceptable for fair use on Wikiversity is significantly less than what is legally permitted. Please consult the Wikimedia Foundation Fair Use Policy to see if this content is permitted on Wikiversity under these further restrictions. Familiarize yourself with the Wikiversity Exemption Doctrine Policy before using this template.

Fair use Fair use of copyrighted material //en.wikiversity.org/wiki/File:Moons_shodow_in_muons.gif


The image is non-free fair use in Muon astronomy.

Fair use for Muon astronomy[edit]

The image linked here is claimed to be used under fair use as:

  1. it is a scientifically significant photo of a muon astronomy phenomenon;
  2. it is of much lower resolution than the original (copies made from it will be of very inferior quality)
  3. the photo is only being used for informational/educational purposes.
  4. Its inclusion in the article adds significantly to the article because it shows the phenomenon depicted in this article and how it has a significant impact on muon astronomy to the general public.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current16:49, 18 January 2013Thumbnail for version as of 16:49, 18 January 2013828 × 616 (21 KB)Marshallsumter (discuss | contribs)An image of the shadow of the Moon in muons as produced by the 700m subterranean Soudan 2 detector in the Soudan Mine in Minnesota. The shadow is the result of approximately 120 muons missing from a total of 33 million detected in Soudan 2 over its 10 ...
  • You cannot overwrite this file.