Stay Connected. The exposure to radioactive elements continues, and the minerals begin again storing free electrons in their structures. When a radiation is incident on a material, some of its energy may be absorbed and re-emitted as light of longer wavelength. The result is a glow curve showing the photon emission in function of the heating temperature: Hidden categories: Energy absorbed from ionising radiation alpha, beta, gamma, cosmic rays frees electrons to move through the crystal lattice and some are trapped at imperfections in the lattice.
Electrons from these substances get trapped in the mineral's crystalline structure, and continuing exposure of the rocks to these elements over time leads to predictable increases in the number of electrons caught in the matrices.
Explore the year a word first appeared. It will often work well with stones that have been heated by fire. October Learn how and when to remove this template message.