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List of elements by stability of isotopes. Isotope half-lives. The darker more stable isotope region departs from the line of protons (Z) = neutrons (N), as the element number Z becomes larger. This is a list of chemical elements by the stability of their isotopes. Of the first 82 elements in the periodic table, 80 have isotopes considered to ...
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
List of chemical elements. 118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [1]
This is a list of film directorial debuts in chronological order. The films and dates referred to are a director's first commercial cinematic release.Many filmmakers have directed works which were not commercially released, for example early works by Orson Welles such as his filming of his stage production of Twelfth Night in 1933 or his experimental short film The Hearts of Age in 1934.
Albert Francis " Al " Simmons, better known as Spawn, is a fictional anti-heroic superhero appearing in a monthly comic book of the same name published by American company Image Comics, as well as in a number of films, television series, and video game adaptations set in the Image Universe. Created by Todd McFarlane, Spawn first appeared in ...
41 of the 118 known elements have names associated with, or specifically named for, places around the world or among astronomical objects. 32 of these have names tied to the places on Earth, and the other nine are named after to Solar System objects: helium for the Sun; tellurium for the Earth; selenium for the Moon; mercury (indirectly), uranium, neptunium and plutonium after their respective ...
present. (present) Blue Eye Samurai is an adult animated action television series created and written for Netflix by wife-and-husband team Amber Noizumi [1][2] and Michael Green, with supervising director and series producer Jane Wu. It was co-produced and animated by French studio Blue Spirit [fr]. The first season premiered on November 3, 2023.
The half-life, t 1/2, is the time taken for the activity of a given amount of a radioactive substance to decay to half of its initial value. The decay constant , λ " lambda ", the reciprocal of the mean lifetime (in s −1 ), sometimes referred to as simply decay rate .