fluoresce
/fluoresce/
Học thuậtThân thiện
Definition
- Verb:
- To emit light of a visible color when exposed to ultraviolet or other high-energy radiation: This is the primary scientific meaning. A substance that fluoresces absorbs light at one wavelength (usually invisible) and almost immediately re-emits it at a longer, visible wavelength. The light stops as soon as the energy source is removed.
- To undergo fluorescence: This describes the process itself.
Usage
- The verb fluoresce is used to describe the specific physical process where a material glows under certain types of light. It is an intransitive verb; it does not take a direct object. You say a substance , not that you something.
- It is most commonly used in scientific, medical, and technical contexts (e.g., chemistry, biology, mineralogy, forensics).
Examples
- Scientific Context:
- Certain minerals fluoresce brilliantly under a black light.
- The dye was designed to fluoresce when bound to specific proteins.
- The jellyfish protein will fluoresce green when exposed to blue light.
Advanced Usage
- "to fluoresce in": To emit a specific color during fluorescence.
- The compound is known to fluoresce in the red part of the spectrum.
- The process or property is fluorescence (noun). The adjective describing a substance capable of this is fluorescent.
Variants and Related Words
- Fluorescence (n): The property or process of fluorescing.
- The fluorescence of the sample was measured.
- Fluorescent (adj): Having the property of fluorescence; emitting light via fluorescence.
- A fluorescent marker was used.
- The fabric contained fluorescent dyes.
- Fluorophore (n): A chemical compound that can fluoresce.
Synonyms
- Glow: A more general term for emitting light, but not specific to the immediate, energy-dependent process of fluorescence.
- Luminesce: A broader term meaning to emit light from any non-thermal process, which includes fluorescence, phosphorescence, and chemiluminescence.
Related Phrases/Idioms
- Fluoresce under UV light: A very common collocation specifying the activating energy source.
- Security features on the passport fluoresce under UV light.
Verb
- exhibit or undergo fluorescence