Eighteen years have passed since the discovery of the Mossbaucr effect certainly one of the most brilliant findings in modern physics. This strange, at first almost unbelievable, effect straddled the border between
nuclear and solid-state physics and soon formed the basis for a new technique, that of Mossbaucr or gamma-resonance spectroscopy. It went on to prove itself to be a powerful tool in almost all disciplines of
the natural sciences and technology. Mossbauer spectroscopy has been used as a key to unlock some basic
physical, chemical, and biological phenomena, as a guide for finding new ways of solving applied scientific and technical problems of mechanics, metallurgy, geology, and mineralogy, and even in archaeology and the
fine arts.