photoelectric

Thân thiện

A scientist demonstrates the photoelectric effect with a metal plate and light.

Definition

1. Adjective:
   • Relating to or involving the electrical effects of light: "photoelectric" describes phenomena where light causes the emission or control of electrical current.
   • Pertaining to photoelectricity: "photoelectric" is the adjective form of the noun "photoelectricity," which is electricity produced by light.

Usage Examples

• Adjective:
  • The scientist conducted a photoelectric experiment. (The scientist performed an experiment involving the electrical effects of light.)
  • This device uses a photoelectric sensor to detect motion. (This device employs a sensor that uses light to generate an electrical signal for motion detection.)
  • Einstein's explanation of the photoelectric effect was groundbreaking. (Einstein's explanation of how light causes electron emission was revolutionary.)

Advanced Usage

• "photoelectric cell": a device that generates an electrical current or voltage when exposed to light.
  • Early light meters in cameras used a photoelectric cell.
• "photoelectric emission": the release of electrons from a material's surface when it absorbs light.
  • The phenomenon of photoelectric emission is crucial for solar panels.

Variants and Related Words

• Photoelectricity (n): electricity produced by or involving the action of light.
  • The study of photoelectricity led to many modern technologies.
• Photoelectron (n): an electron emitted from a substance by the photoelectric effect.
  • The energy of the photoelectron was measured.

Synonyms

• Photoemissive: relating to the emission of electrons by light.
  • The material's photoemissive properties were tested.

Related Phrases and Compounds

• Photoelectric effect: the phenomenon where light shining on a material causes it to emit electrons.
  • The photoelectric effect demonstrates the particle nature of light.
• Photoelectric sensor: a device that detects objects or measures distance using a light beam and a photoelectric receiver.
  • The automatic door operates with a photoelectric sensor.

Học thuật

Adjective

1. of or pertaining to photoelectricity
   • the photoelectric effect

Từ đồng nghĩa

• photoelectrical