File:Moon's shadow in muons.gif

Moon's_shadow_in_muons.gif(367 × 273 pixels, file size: 17 KB, MIME type: image/gif)

Non-free media data
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
Portion used

All - the image is purely constructed from scientific data, contains no trademarked or copyrighted logos, and is freely shared information.

Low resolution?

No, details hardly visible at low resolution.

Non-free media rationale for Muon
Article

Muon

Purpose of use

To illustrate muons, their detection and effect, since no picture can be obtained of a muon itself.

Replaceable?

Data takes many years to gather with sophisticated technology (Soudan 2).

Non-free media rationale for Cosmic ray
Article

Cosmic ray

Purpose of use

To illustrate muons produced by cosmic rays, their detection and effect.

Replaceable?

Data takes many years to gather with sophisticated technology (Soudan 2).

File history

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Date/TimeThumbnailDimensionsUserComment
current22:55, 12 February 2017Thumbnail for version as of 22:55, 12 February 2017367 × 273 (17 KB)Diannaa (talk | contribs)reduce size to comply with Wikipedia's non-free content policy
08:40, 30 April 2005No thumbnail828 × 616 (21 KB)Deglr6328 (talk | contribs)An image of the shadow of the moon in muons as produced by the 700 meter 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 1
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