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Media in category "Non-free chemistry images" The following 23 files are in this category, out of 23 total. 0–9. File:1g of neptunium metal.jpg; A.
Save as: TIFF black/white bitmap with a resolution of 720 dpi (small molecules) to 240 dpi (large molecules) (in ChemDraw under the Options button in the Save as TIFF dialog). ChemDraw / ChemBioDraw 11 (2007) cannot save black and white TIFF images. Therefore, save as a 1200 dpi greyscale TIFF image and decrease the color depth to 2 bit (black ...
Alchemical symbols were used to denote chemical elements and compounds, as well as alchemical apparatus and processes, until the 18th century. Although notation was partly standardized, style and symbol varied between alchemists.
There are techinically a few pictures of francium floating around, 2 of which are on the element's article (the 300,000 atom heat one and the 200,000 atom light one), and 2 here (the black and white one of 1000 atoms, and the discovery paper). However, none of these depict the atom directly, they are just images of the heat and light emitted by ...
Images composed of simple shapes, lines, and letters such as those below should be recreated using vector graphics as an SVG file. These have a number of advantages, such as making it easier for subsequent editors to edit them, enabling arbitrary scaling at high quality, and sharp high-resolution renderings for print versions.
Have a look at Category:Chemistry pages needing pictures; pages transcluding {{Chemical drawing needed}} automatically categorises pages which have a the request template into this category (replace incorrect drawings with this template), as does the parameter needs-picture=yes in the project banners {} or {}.
This image shows a flag, a coat of arms, a seal or some other official insignia produced by the United States Army Institute of Heraldry.It is in the public domain but its use is restricted by Title 18, United States Code, Section 704 and the Code of Federal Regulations (32 CFR, Part 507), .
The chemical elements are what the periodic table classifies and organizes. Hydrogen is the element with atomic number 1; helium, atomic number 2; lithium, atomic number 3; and so on. Each of these names can be further abbreviated by a one- or two-letter chemical symbol; those for hydrogen, helium, and lithium are respectively H, He, and Li. [6]