These variables interrelate in the following ways: archaeological energy ——————————– = neutral energy archaeological dose —————————– = age annual energy rate a) In a case where archaeological energy can be established the neutral energy curve, in certain areas, runs proportional to the archaeological curve.b) In the case of a recent copy no proportional run of curves can be observed due to the obvious absence of any archaeological / historical energy.
Quarz and feldspar as well as a number of other minerals have the ability to store energy generated by radioactive radiation.
Under exposure to great heat such minerals release this energy again in form of light impulses.
At now fine grains method is applied in our laboratory, but in future also the quartz inclusion grains procedure will be implemented.
After an experimental comparison between chemical preparations of the samples reported in literature, the procedure described in  was adopted, being the one that gave the best results on objects of known age even if the material is of poor quality.
In order to determine the ‘annual energy rate and thereby the exact age of an object, the object specific energy output of the three basic radiation types; alpha, beta and gamma rays, has to be defined.
At this point which touches at the boundaries of nuclear physics, the exact dating of objects of art often becomes problematic.At the re-heating of a material sample taken from the fired object impulses of emitted light can be measured in the laboratory which correspond with the time interval between the present observation and the last firing.These findings have provided us with the basic principles of scientific dating methods. The so-called ‘archaeological energy ‘ or N T L – .the name already indicates that an archaeological, i.e.historical aging has been registered since the last firing of the object. The ‘neutral energy ‘ – ß or NTL ß (alpha) which is the amount of energy emitted by the same material after renewed exposure to radiation from a gauged radioactive source. The ‘annual energy rate ‘ or J D/ D which represents the annual increase of accumulatively stored energy.In order to measure the supralinearity, a second analysis is carried out after removing natural TL by means of a heating (four hours at 450 °C).