huỳnh quang
Học thuậtThân thiện
Definition
- Noun:
- Fluorescence: A physical phenomenon where certain substances emit visible light when exposed to ultraviolet light or X-rays. The emitted light typically stops shortly after the exciting radiation is removed.
Usage Examples
- Noun:
- Hiện tượng huỳnh quang được ứng dụng trong nhiều lĩnh vực khoa học. (The phenomenon of fluorescence is applied in many scientific fields.)
- Ánh sáng huỳnh quang của chất này có màu xanh lục. (The fluorescent light of this substance is green.)
- Họ nghiên cứu cường độ huỳnh quang của mẫu vật. (They study the fluorescence intensity of the specimen.)
Advanced Usage
- "Phát huỳnh quang" / "Có tính huỳnh quang": To fluoresce / To be fluorescent.
- Một số khoáng chất phát huỳnh quang dưới tia cực tím. (Some minerals fluoresce under ultraviolet light.)
- "Huỳnh quang hữu cơ": Organic fluorescence.
- Huỳnh quang hữu cơ là chủ đề nghiên cứu quan trọng. (Organic fluorescence is an important research topic.)
Variants and Related Words
- Huỳnh quang hóa (n): Fluoroscopy (a technique for obtaining real-time moving images using X-rays and a fluorescent screen).
- Vật liệu huỳnh quang (n): Fluorescent material.
- Chất huỳnh quang (n): Fluorescent substance/fluorophore.
- Đèn huỳnh quang (n): Fluorescent lamp (a compound term where 'huỳnh quang' describes the type of lamp).
Synonyms
- Sự phát quang: Luminescence (a broader term that includes fluorescence and phosphorescence).
- Sự lân quang: Phosphorescence (a related phenomenon where light emission continues for a time after the excitation stops).
Related Phrases
- Kính hiển vi huỳnh quang: Fluorescence microscope.
- Phổ huỳnh quang: Fluorescence spectrum.
- Bước sóng kích thích huỳnh quang: Fluorescence excitation wavelength.
Notes on Meaning
- Huỳnh quang specifically refers to the physical phenomenon or property itself. It is not typically used as a verb in Vietnamese; the verb form is expressed with "phát huỳnh quang".
- It is distinct from "lân quang" (phosphorescence), which involves delayed light emission.
- In everyday language, it is most commonly encountered in the compound term "đèn huỳnh quang" (fluorescent lamp).