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Babel user information
This user is an administrator on the English Wikipedia. (verify)
This user is an administrator on Wikimedia Commons. (verify)
This user contributes using GIMP.
en-4 This user has near native speaker knowledge of English.
ru-4 Этот участник владеет русским языком почти как родным.
nl-3 Deze gebruiker heeft gevorderde kennis van het Nederlands.
fr-1 Cet utilisateur dispose de connaissances de base en français.
es-1 Esta persona tiene un conocimiento básico del español.
Users by language

My activities here change with time. I improve images and can remove watermarks, clone parts of the image and reduce regular noise (FFT filtering); I also draw crystal structures from CIF files and can provide CIF files for many solids. More information can be found on my user page. I review and tag newly uploaded images for copyright violations – please don't take it personally, copyright rules are difficult and often annoying; they differ across various wikis and other websites, but we must follow them. I used to be fluent in Dutch and could speak some French and Spanish, meaning I can still understand a bit of these and a few other European languages, but I will probably reply in English.

Useful Commons-related links

Where to look for free images (not all are free)

Flickr image info. License OK here?
© All rights reserved Copyrighted NOT OK
Some rights reserved CC-BY-NC-ND NOT OK
Some rights reserved CC-BY-NC-SA NOT OK
Some rights reserved CC-BY-NC NOT OK
Some rights reserved CC-BY-ND NOT OK
Some rights reserved CC-BY OK
Some rights reserved CC-BY-SA OK
No rights reserved. Public Domain OK

Old images



GIMP plugins

My contribution to valued images

Category:Photographs by User:Materialscientist