light-sensitive
Học thuậtThân thiện
Definition
- Adjective:
- Reacting to or affected by light: Describes a material, substance, or biological system that undergoes a change or responds when exposed to light, especially visible light.
- Having a property that changes with light exposure: Often used for materials whose chemical or physical state is altered by light, such as photographic film or certain electronic components.
Usage Examples
- Adjective:
- Photographic film is light-sensitive and must be kept in a dark container.
- Some people have light-sensitive skin that burns easily in the sun.
- The device uses a light-sensitive cell to automatically turn on the streetlamp at dusk.
Advanced Usage
- Scientific/Technical Context: In biology and medicine, it can describe cells, like those in the retina, or conditions, like photophobia.
- The patient's light-sensitive eyes required her to wear sunglasses indoors.
- In Chemistry and Materials Science: Refers to compounds or coatings that react photochemically.
- The light-sensitive coating on the silicon wafer is essential for the lithography process.
Variants and Related Words
- Photosensitive (adj): A more technical synonym, often used interchangeably with "light-sensitive," especially in scientific contexts.
- The patient was diagnosed with a photosensitive rash.
- Photoreceptive (adj): Specifically describes biological cells or systems capable of detecting light.
- The photoreceptive cells in the plant's leaves help it track the sun.
Synonyms
- Photosensitive: Reacting to light.
- Photoreactive: Undergoing a chemical reaction upon light absorption.
Related Phrases and Compounds
- Light-sensitive paper: Paper coated with a chemical that changes when exposed to light, used in photography and blueprinting.
- Light-sensitive resistor (LDR): An electronic component whose electrical resistance decreases when light intensity increases.
Adjective
- sensitive to visible light
- photographic film is light-sensitive