Definition

1. Noun:
   • Phosphorescence: A type of light emitted by certain substances without producing heat, such as after being exposed to light or other radiation. This glow persists in the dark after the original energy source is removed.

Usage Examples

• Noun:
  • Vỏ đồng hồ dạ quang có khả năng phát ra lân quang. (The watch's dial has the ability to emit phosphorescence.)
  • Hiện tượng lân quang thường thấy ở một số loài sinh vật biển. (The phenomenon of phosphorescence is often seen in some marine species.)
  • Ánh sáng xanh nhạt trong hang động là do lân quang từ các khoáng chất. (The pale blue light in the cave is due to phosphorescence from the minerals.)

Advanced Usage

• The term "lân quang" is specifically used in scientific contexts (physics, chemistry, biology) to describe the physical property of persistent light emission. It is distinct from (luminescence), which is the broader category, and (fluorescence), which is a type of luminescence that stops immediately when the energy source is removed.

Variants and Related Words

• Phát quang (n): Luminescence (the general term for light emission not resulting from heat).
• Huỳnh quang (n): Fluorescence (light emission that stops immediately when the energy source is removed).
• Dạ quang (n): Often used interchangeably with in everyday language, especially for manufactured items like watch dials or stickers.

Synonyms

• Phosphorescence
• Afterglow (in a general, non-technical sense)

Related Concepts

• Bioluminescence: Light produced by a chemical reaction within a living organism. While bioluminescence is a form of chemiluminescence, it can sometimes be described colloquially as "lân quang sinh học" (biological phosphorescence), especially when the glow persists.

noun

1. phosphorescence