Definition

Noun: * A radiation detection device: A "spark counter" is a scientific instrument designed to detect and sometimes measure ionizing radiation emitted by elementary particles or other radioactive sources. It operates by creating an electrical spark when radiation ionizes the gas within the device.

Usage

• The term is a compound noun used specifically in scientific and technical contexts, particularly in physics and radiation detection.
• It functions as a countable noun (e.g., , ).

Examples

• Noun:
  • The physicist used a spark counter to confirm the presence of alpha particles.
  • Early experiments in particle detection often relied on simple spark counters.

Advanced Usage

• The device may be described based on its specific application or the type of radiation it is most sensitive to (e.g., , ).

Variants and Related Words

• Spark chamber (n): A related, more advanced particle detector that visually displays the paths of ionizing particles as a series of sparks.
• Geiger counter (n): A more common and widely known type of radiation detection instrument.
• Particle detector (n): The general category of instruments to which a spark counter belongs.

Synonyms

• Radiation detector
• Particle detector (general term)

Notes on Meaning

• The "spark" refers to the visible or audible electrical discharge that signals the detection event.
• The "counter" refers to the instrument's function of counting these detection events.
• It is considered a historical or specialized type of detector in modern contexts.

Noun

1. an instrument that detects ionizing radiation from elementary particles