Nucleon
In chemistry and physics, a nucleon is one of the particles that makes up the atomic nucleus. Each atomic nucleus consists of one or more nucleons, and each atom in turn consists of a cluster of nucleons surrounded by one or more electrons. There are two known kinds of nucleon: the neutron and the proton. The mass number of a given atomic isotope is identical to its number of nucleons. Thus the term nucleon number may be used in place of the more common terms mass number or atomic mass number.
Until the 1960s, nucleons were thought to be elementary particles, each of which would not then have been made up of smaller parts. Now they are known to be composite particles, made of three quarks bound together by the so-called strong interaction. The interaction between two or more nucleons is called internucleon interactions or nuclear force, which is also ultimately caused by the strong interaction. (Before the discovery of quarks, the term "strong interaction" referred to just internucleon interactions.)
Action Masters
Action Masters are a sub-line of the Transformers toy franchise, first released in 1990, with a wave of new releases released in Europe in 1991. It featured Transformers action figures who were unable to transform, but came with transforming partners, weapons or exo-suits. Some of the larger sets came with transforming vehicles or bases. This was the last sub-line release as part of the original Transformers toyline before the launch of Generation 2.
Toy design
Action Masters were non-transformable 33⁄4 inch action figures designed to represent classic and new Transformers characters. Those based on existing characters, were designed to best match their appearance in the popular cartoon series, with the newer characters following the same basis design. Despite the lack of an ability to transform, they had more articulation than many of the Transformers toylines that preceded it, with moveable heads, arms, knees and legs. To complement the figures, each came with a transformable weapon, or in the case of the larger sets, a transformable vehicle.
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