What is luminescence and how materials work, glowing in the dark 10.01.2025 – Posted in: Useful

Luminescence is a physical phenomenon, in which certain substances emit light after energy absorption. Unlike thermal radiation, for example, In the incandescent lamp, luminosity during luminescence is not related to the significant heating of the object.

Such a glow can occur as a result of different processes - chemical, physical or biological, and it is the basis for creating materials, glowing in the dark.

How luminescence works?

Retainer (bobishka) for SMA-connector fluorescent (white with a blue glow)

Materials, that glow, contain phosphors - special particles, able to accumulate energy when illuminated by sunlight or artificial light. After that, as the light source disappears, phosphors gradually release this energy in the form of visible light.

The main stages of the process:

  1. Accumulation of energy: Luminophores absorb the energy of light waves, charging within minutes.
  2. The glow: In the dark or with insufficient lighting, the material begins to emit light. This can take from a few minutes to a few hours depending on the type of phosphor.
  3. Discharge: The intensity of the glow gradually decreases to complete extinction.

Features of luminescent materials

  1. The color of the glow: Depends on the type of phosphor. The most common is green, blue and yellow shades.
  2. Glowing time: From a few minutes to a few hours after charging.
  3. Light intensity: The largest immediately after energy absorption, then gradually decreases.

How to use fluorescent materials?

  • Marking: They are often used to create markers and signs, that can be seen in the dark.
  • Security: Light markers on emergency exits or stairs provide orientation in the dark.
  • Decor: Elementi, that glow, add uniqueness to the interior or design.
  • Entertainment: Toys, accessories or jewelry with a glowing effect always attract attention.

Materials based on luminescence have many practical and decorative applications. They provide convenience, aesthetics and even safety in everyday life.

How to charge and use fluorescent objects?

To ensure a bright and long-lasting glow, fluorescent objects are best charged under the influence of ultraviolet light, which is found in large quantities in sunlight.

  1. Light: For efficient charging, use UV lamps or place items in direct sunlight. UV rays provide fast and high-quality energy storage.
  2. Charging time: That's enough 10-20 minutes in the sun or under a UV lamp, so that the object glows for several hours in the dark.
  3. Terms of use: Unleash the full potential of luminescence, using items in the dark or dimly lit rooms.

Fluorescent materials provide the best result precisely due to charging with ultraviolet radiation, contained in natural sunlight, therefore, they are ideal for daytime use with a subsequent effect in a dark room.