Wikipedia
Free encyclopedia available to everyone
-
Trinity News
This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article needs additional citations for verifica
Read more » -
NASA insignia
The NASA has three official insignias, although the one with stylized red curved text (the "worm") was retired from official use from May 22, 1992, until April 3, 2020, when it was reinstated as a
Read more » -
Reaction intermediate
In chemistry, a reaction intermediate, or intermediate, is a molecular entity arising within the sequence of a stepwise chemical reaction. It is formed as the reaction product of an elementary step
Read more » -
Celestial object
An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists within the observable universe. In astronom
Read more » -
Johannes Stark
This article needs additional citations for verification.Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Jo
Read more » -
Photochemical reaction
Organic photochemistry encompasses organic reactions that are induced by the action of light. The absorption of ultraviolet light by organic molecules often leads to reactions. In the earliest days
Read more » -
Theodor Grotthuss
Freiherr Christian Johann Dietrich Theodor von Grotthuss (20 January 1785 – 26 March 1822) was a Baltic German scientist known for establishing the first theory of electrolysis in 1806 and formulat
Read more » -
Isotope analysis
This article needs additional citations for verification.Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Is
Read more » -
Photochemical Reaction
Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength
Read more » -
Stable isotopes
The term stable isotope has a meaning similar to stable nuclide, but is preferably used when speaking of nuclides of a specific element. Hence, the plural form stable isotopes usually refers to iso
Read more »