In medieval Europe, the bullseye of the crown type of this was less expensive than the outer edges.
During the Hellenistic period, the millefiori technique was developed, allowing people to create intricate designs in it. A light green type of this, called trinitite, was formed as a result of the Trinity nuclear test. It is formed by quenching a melt. In medieval Europe, the bullseye of the crown type of this was less expensive than the outer edges. Because of the lack of electric transition states in the range of visible light and because of its homogeneity, it is usually transparent. (*) Some common types include the Germania, soda-lime, and borosilicate types. Natural ones, such as obsidian, are usually produced in lava flows. It is cooled through its transition temperature quickly enough so that a crystal lattice cannot form, hence they are amorphous. For 10 points, name this solid material commonly used in window panes.
During the Hellenistic period, the millefiori technique was developed, allowing people to create intricate designs in it.
glass 