Reluming is a term primarily used in horology, which refers to the process of replacing or replenishing the luminescent material on watch dials or hands. It is derived from the words "re" meaning again, and "luminous" referring to the light-emitting quality of the material.
The main purpose of reluming is to restore the visibility and functionality of the luminous elements on watches. Over time, the luminescent material tends to decay or degrade, causing the watch to lose its ability to emit light in the dark. This can be due to natural wear and tear, exposure to sunlight, or chemical reactions within the material itself. Reluming involves carefully removing the old, deteriorated material and applying a fresh layer of luminescent substance.
The materials used in reluming vary, but commonly include phosphorescent compounds like Superluminova or Tritium. These substances have the ability to absorb and store light energy, which is released slowly over time, causing the watch hands or markers to glow in the dark.
Reluming is typically performed by skilled watchmakers or technicians. It requires precision, dexterity, and knowledge of the specific luminescent materials used in the particular watch. The process involves disassembling the watch, removing the old lume, applying the new lume, and then reassembling the timepiece.
Reluming is considered an essential part of watch maintenance, as it ensures that time can be easily read even in low-light or nighttime conditions. By restoring the luminosity of the watch, reluming enhances its visibility, legibility, and overall functionality.
