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Images released under "non-commercial use only" licences are not accepted and will be deleted without warning, as will images without a tag. The easiest way is to use this pre-filled upload form. Please complete the form and one or more specific categories (normally subcategories of Category:Chemical compounds). Alternative method:
To the uploader: Please provide as parameter the link to the page where this image appears. Open Clip Art Library logo ... Warning sign: Width: 156.262: Height: 144.407
An image sometimes includes a familiar object to communicate scale. Such fiducial markers should be as culturally universal and standardized as possible: rulers, matches, batteries, pens/pencils, footballs (soccer balls), people and their body parts, vehicles, and famous structures such as the Eiffel Tower are good choices, but many others are possible.
The Journal of the American Chemical Society (also known as JACS) is a weekly peer-reviewed scientific journal that was established in 1879 by the American Chemical Society. [1] The journal has absorbed two other publications in its history, the Journal of Analytical and Applied Chemistry (July 1893) and the American Chemical Journal (January ...
Use the lowest bit depth that can handle all colours in your image, although some image editing programs cannot create 2-bit colour images. If you are converting an image with many colours (perhaps because somebody saved the original as a JPEG, avoid this ) to a PNG, you may want to reduce the number of colours at the same time; see Wikipedia ...
This file is saved in human-editable plain text format. Any editing of the image or creation of any derivative work should be performed using a text editor . Please do not upload edits saved or exported with Inkscape or similar vector graphics editors , as well as with automated tools such as SVG Translate .
A well-organized slide show allows a presenter to fit visual images to an oral presentation. The old adage "A picture is worth a thousand words" holds true, in that a single image can save a presenter from speaking a paragraph of descriptive details. As with any public speaking or lecturing, a certain amount of talent, experience, and rehearsal ...
A warning sign is a type of sign which indicates a potential hazard, obstacle, or condition requiring special attention. Some are traffic signs that indicate hazards on roads that may not be readily apparent to a driver.