Data Types (ADTs) are used to specify the intended effect of concrete data types by defining their properties as a set of data objects with their manipulating operations. Because of their formal base, the ADT specifications can serve as abstract, correct, and unambiguous references for the implementation. LOTOS, as an abstract specification language, uses an ADT based on ACT ONE formalism to de...

A brief review of particle physics motivations for axion existence is followed by a discussion of optical observables that can be used for axion detection. It is emphasised that the resonant photon axion transition can occur in the presence of low density gas bringing the experimentally accessible quantities within the reach of the present day technology. E-mail: [email protected]. 2...