Szemtörések

Szemtörések is a Hungarian term that translates to "eye breaks" or "eye cracks." It refers to a phenomenon observed in certain types of glass, particularly in older window panes and decorative glass objects. These breaks are not sharp, jagged fractures like those seen in dropped glassware. Instead, they appear as delicate, intricate patterns of fine lines or networks within the glass itself.

The formation of szemtörések is generally attributed to a combination of factors, primarily stress and age. Over long periods, glass can undergo internal stresses due to manufacturing processes, temperature fluctuations, or the weight it supports. These stresses, when combined with the natural aging and degradation of the glass material, can lead to the development of these characteristic fracture patterns. Environmental conditions, such as exposure to sunlight and humidity, can also play a role in exacerbating these stresses.

Szemtörések are often considered a sign of authenticity and age in antique glass. They are not usually indicative of structural weakness unless the breaks are extensive or significant. In many cases, the delicate patterns add a unique aesthetic quality to the glass, contributing to its historical character and visual appeal. Conservators working with antique glass often take great care to preserve these szemtörések, recognizing their historical significance. The term is primarily used in Hungarian contexts, particularly by collectors, historians, and restorers of antique glass.