പ്രമാണം:UltramicroscopeSchematicDrawing.jpg

Simple schematic drawing of an ultramicroscope

Tutorial on Colloids, by Sumanyu Chauhan, page 25 of a powerpoint presentation published at Scribd.com. This presentation is published under a Creative Commons license allowing free reuse, except that it's restricted to Noncommercial reuse. The Creative Commons license also requires attribution to the creator.

Ultramicroscope

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Illustrate Ultramicrope article by schematic drawing of an ultramicroscope

This image is replaceable in theory, but in practice I was unable to find a free equivalent anywhere after searching diligently. I could create a similar image myself, but I think it'd effectively be plagiarizing the one I've seen here. Sooner or later this image should be replaced by one that doesn't have the restriction to Noncommercial use. In the meantime the illustration is a valuable addition to the Ultramicroscope article.