English: An illustration of a fragmentation bomb from the 14th century Ming Dynasty book Huolongjing. The black dots represent iron pellets. Text on left: 中藏铁子神砂 (Iron pellets inside [are] magical grit), Text on right: 爛骨火油神砲 (Bone crushing petroleum magical artillery [shell]).
Date
14th century
date QS:P,+1350-00-00T00:00:00Z/7
Source
Huolongjing, from Science and Civilisation in China p.180
Author
Jiao Yu and Liu Ji
Licensing
This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
Public domainPublic domainfalsefalse
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.
Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.
File history
Click on a date/time to view the file as it appeared at that time.