Image:Light behaviour through pinhole.svg

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Light_behaviour_through_pinhole.svg (SVG file, nominally 768 × 357 pixels, file size: 6 KB)

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[edit] Summary

Description

The penetration of the sun light forms the conic shape and its reverse inside the dark room.

Source

Vectorized by User:Mysid in Inkscape from Mustafa Nazeef Bec (1942), ‘Al-Hacen Ibn Al-Haitham; his optical research and discoveries’, in Arabic, Nuri Publishing, Egypt, p.152 (en:Image:Light behaviour through pinhole.jpg).

Date

1011-1021

Author

Al-Hacen Ibn Al-Haitham

Permission
(Reusing this image)

see below


[edit] Licensing

Public domain This image (or other media file) is in the public domain because its copyright has expired.

This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years.


Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Côte d'Ivoire has a general copyright term of 99 years and Honduras has 75 years, but they do implement that rule of the shorter term.


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File history

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

Date/TimeDimensionsUserComment
current08:19, 24 August 2007768×357 (6 KB)Mysid (should be OK now)
08:18, 24 August 2007768×357 (6 KB)Mysid (fiddle more)
08:16, 24 August 2007768×357 (6 KB)Mysid (fiddle with Inkscape's buggy Arabic support)
08:13, 24 August 2007768×357 (6 KB)Mysid (==Summary== {{Information |Description=The penetration of the sun light forms the conic shape and its reverse inside the dark room. |Source=Vectorized by Mysid in Inkscape from Mustafa Nazeef Bec (1942), ‘Al-Hacen Ibn Al-Haitham; his optical research an)
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