Carbon dating or
For instance, it is possible to date the wood support of a panel as well as canvas.The three most important dating techniques which are useful for the analysis of works of art are: Thermoluminescence (TL), Dendrochronology (DC), and Carbon 14 (C15). It dates items between the years 300-10,000 BP (before present).Thermoluminescence dating is generally not very accurate.The accuracy of thermoluminescence dating is only about 15% for a single sample and 7 to 10% for a suite of samples in a single context.Instead, a less sophisticated method that would deceive TL testing is to reuse original broken and unmarketable pieces.
Generally, for example, we can’t establish when a vermilion stroke was brushed onto a painting, but we can date most of the materials that the pigments are painted on.
When the object is heated to 350 degrees Celsius the trapped electrons are released and this is called a clock resetting event.
From this time on, electrons start to build up again because of the natural radioactivity.
The TL operator generally takes samples for dating from the bottom, avoiding damage to the image of the artwork.
TL is based on the fact that almost all natural minerals are thermoluminescent.