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2. Photographic print toning - Wikipedia

   en.wikipedia.org/wiki/Photographic_print_toning

   (Book) Photographic facts and formulas (1924) Many various toners (copper, iron, vanadium, selenium, sulphide, etc.)(p. 216) (Book) All about formulae for your darkroom (1942) Selenium, indirect sulphide toning, red chalk, blue and green tones (pp. 44–47) (Book) Kodak Chemicals and Formulae (1949) Selenium, sulphide-selenium and other toners ...

3. List of textbooks on classical mechanics and quantum ...

   en.wikipedia.org/wiki/List_of_textbooks_on...

   Abraham, R.; Marsden, J. E. (2008). Foundations of Mechanics: A Mathematical Exposition of Classical Mechanics with an Introduction to the Qualitative Theory of Dynamical Systems (2nd ed.).

4. Jefimenko's equations - Wikipedia

   en.wikipedia.org/wiki/Jefimenko's_equations

   The Heaviside–Feynman formula, also known as the Jefimenko–Feynman formula, can be seen as the point-like electric charge version of Jefimenko's equations. Actually, it can be (non trivially) deduced from them using Dirac functions , or using the Liénard-Wiechert potentials . [ 4 ]

5. Selenium - Wikipedia

   en.wikipedia.org/wiki/Selenium

   Selenium is found in metal sulfide ores, where it substitutes for sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores. Minerals that are pure selenide or selenate compounds are rare. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells.

6. Lists of physics equations - Wikipedia

   en.wikipedia.org/wiki/Lists_of_physics_equations

   In physics, there are equations in every field to relate physical quantities to each other and perform calculations. Entire handbooks of equations can only summarize most of the full subject, else are highly specialized within a certain field. Physics is derived of formulae only.

7. Selenium sulfide - Wikipedia

   en.wikipedia.org/wiki/Selenium_sulfide

   Download QR code; Print/export Download as PDF; Printable version; In other projects ... move to sidebar hide. Selenium sulfide can refer to either of the following ...

8. Sulfoxide - Wikipedia

   en.wikipedia.org/wiki/Sulfoxide

   In organic chemistry, a sulfoxide, also called a sulphoxide, is an organosulfur compound containing a sulfinyl (>SO) functional group attached to two carbon atoms. It is a polar functional group. Sulfoxides are oxidized derivatives of sulfides .

9. Selenium compounds - Wikipedia

   en.wikipedia.org/wiki/Selenium_compounds

   The sulfoxide in sulfur chemistry is represented in selenium chemistry by the selenoxides (formula RSe(O)R), which are intermediates in organic synthesis, as illustrated by the selenoxide elimination reaction. Consistent with trends indicated by the double bond rule, selenoketones, R(C=Se)R, and selenaldehydes, R(C=Se)H, are rarely observed.