"All physical elements begin to decay once they are formed and do so at a determinable rate. Radiometric dating is like a clock inside a rock which began ticking when that rock was formed and hence began to decay. The rate of decay is determined by the ratio between two isotopes called the parent and daughter. Their ratio determines the age of the rock"
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.