User talk:Ldm1954

Welcome to Wikimedia Commons, Ldm1954!

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-- Wikimedia Commons Welcome (talk) 16:17, 16 January 2023 (UTC)

Copyright status: File:Tribocharge generated from a sliding drop.tif

Copyright status: File:Tribocharge generated from a sliding drop.tif

This media may be deleted.

Thanks for uploading File:Tribocharge generated from a sliding drop.tif. I notice that the file page either doesn't contain enough information about the license or it contains contradictory information about the license, so the copyright status is unclear. If you created this file yourself, then you must provide a valid copyright tag. For example, you can tag it with {{self|GFDL|cc-by-sa-all}} to release it under the multi-license GFDL plus Creative Commons Attribution-ShareAlike All-version license or you can tag it with {{PD-self}} to release it into the public domain. (See Commons:Copyright tags for the full list of license tags that you can use.) If you did not create the file yourself or if it is a derivative of another work that is possibly subject to copyright protection, then you must specify where you found it (e.g. usually a link to the web page where you got it), you must provide proof that it has a license that is acceptable for Commons (e.g. usually a link to the terms of use for content from that page), and you must add an appropriate license tag. If you did not create the file yourself and the specific source and license information is not available on the web, you must obtain permission through the VRT system and follow the procedure described there. Note that any unsourced or improperly licensed files will be deleted one week after they have been marked as lacking proper information, as described in criteria for deletion. If you have uploaded other files, please confirm that you have provided the proper information for those files, too. If you have any questions about licenses please ask at Commons:Village pump/Copyright or see our help pages. Thank you.

This action was performed automatically by AntiCompositeBot (talk) (FAQ) 22:06, 10 July 2023 (UTC)

It is none of the categories that you mention. It was provided to me by Professor Lars Egil Helseth, and I state exactly that in the information. I quoted the statement from him in the information, and I will quote it again:

"Dear Professor Marks.

I have attached two pictures you may use as you like. The first (el1.tif) shows how a polymer (or other material) surface is charged when a droplet is passing over it. Initially one observes opposite charge as that provided by water, then followed by the same polarity charge if the droplet is allowed to slide far enough. This was first reported by Yatsuzuka et al. (Journal of Electrostatics 32 (1994) 157-171), and has since been found experimentally to be valid by several groups.

The second picture is similar to figure 2 in the publication you refer to (el2.tif), but different enough such that you can use it freely on wikipedia if you wish."

The picture I have uploaded is the second. Ldm1954 (talk) 22:54, 10 July 2023 (UTC)