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File:Red rain Kerala optical microscope.jpg

Red_rain_Kerala_optical_microscope.jpg ‎(300 × 246 pixels, file size: 19 KB, MIME type: image/jpeg)

Summary edit

Red rain in Kerala under an optical microscope at 1000x magnification. Original caption: Photomicrograph of the red rain particles under 1000x magnification. Particles have size variation from 4 to 10 micrometers. Inset shows red rainwater contained in a 5ml sample bottle.

Licensing edit

Description Red rain in Kerala under an optical microscope at 1000x magnification. Original caption:

"Photomicrograph of the red rain particles under 1000x magnification. Particles have size variation from 4 to 10 micrometers. Inset shows red rainwater contained in a 5ml sample bottle."

Source

originally from Louis and Kumar's research paper, currently in Red rain in Kerala.

Date

February 17, 2013.

Author

Louis and Kumar.

Rationale

No free licensed or public domain alternatives known to exist to show the red rain in Kerala under an optical microscope at 1000x magnification about 2013.

Permission

Fair use claimed

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Fair use Fair use of copyrighted material //en.wikiversity.org/wiki/File:Red_rain_Kerala_optical_microscope.jpg


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

Fair use for Meteor astronomy edit

To illustrate the microscopic nature of meteor radiation (specifically the origin of red rain particles), since no picture can be obtained of the meteor radiation itself (the image is of the collected particles from the red rain rather than the red rain itself).

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

  1. It is a scientifically significant photo of a meteor 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 the article and how it has a significant impact on meteor astronomy to the general public.
  5. Not replaceable with a free image since this phenomenon is very rare.

File history

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Date/TimeThumbnailDimensionsUserComment
current22:00, 17 February 2013Thumbnail for version as of 22:00, 17 February 2013300 × 246 (19 KB)Marshallsumter (discuss | contribs)Red rain in Kerala under an optical microscope at 1000x magnification. Original caption: Photomicrograph of the red rain particles under 1000x magnification. Particles have size variation from 4 to 10 micrometers. Inset shows red rainwater contained in...

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