quang phát quang

Một tinh thể quang phát quang phát ra ánh sáng xanh lục dưới đèn tia cực tím.

Definition

1. Noun:
   • Photoluminescence: A physical phenomenon where a material absorbs photons (light) and then re-emits light. The emitted light is often of a different wavelength (color) than the absorbed light.

Usage Examples

• Noun:
  • Hiện tượng quang phát quang được sử dụng trong màn hình TV. (The phenomenon of photoluminescence is used in TV screens.)
  • Các nhà khoa học đang nghiên cứu vật liệu quang phát quang mới. (Scientists are researching new photoluminescent materials.)

Advanced Usage

• The term is a compound scientific term. In technical contexts, it can function as an adjective in phrases like "vật liệu quang phát quang" (photoluminescent material) or "hiệu ứng quang phát quang" (photoluminescence effect).

Variants and Related Words

• Phát quang (v/n): to luminesce / luminescence. A broader term for light emission.
• Huỳnh quang (n): fluorescence (a type of photoluminescence).
• Lân quang (n): phosphorescence (a type of photoluminescence).

Synonyms

• Photoluminescence (English technical synonym).

Related Scientific Concepts

• Huỳnh quang: Fluorescence. A rapid form of photoluminescence that stops almost immediately when the light source is removed.
• Lân quang: Phosphorescence. A prolonged form of photoluminescence that continues after the light source is removed.