This is a png image obtained a formula into from a scanned site of "A Treatise on Electricity and Magnetism Volume I", published by James Clerk Maxwell. He has died on November the 5th, 1879 in Cambridge, what makes his publications public domain.
DescriptionA Treatise on Electricity and Magnetism Volume 1 Fig0.png
Test image used in wikisource talks about math tag
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 image shows some kind of formula that could be converted to TeX. Storing formulas as images makes it harder to change them. TeX also helps making sure that they all use the same font and size. A replacement has been proposed:
In your article, replace the image with:
<math>\iint \left(m \frac{dX}{dz} - n \frac{dX}{dy} +n \frac{dY}{dx} - l \frac{dY}{dz} + l \frac{dZ}{dy}- m \frac{dZ}{dx}\right)dS</math>
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.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
{{PD-Old}} This is a png image obtained a formula into from a scanned site of "A Treatise on Electricity and Magnetism Volume I", published by '''James Clerk Maxwell'''. He has died on November the 5th, 1879 in Cambridge, what makes his publications