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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

artifact, artefact go
a man-made object taken as a whole

instrumentation, instrumentality go
an artifact (or system of artifacts) that is instrumental in accomplishing some end

device go
an instrumentality invented for a particular purpose

instrument go
a device that requires skill for proper use

measuring instrument, measuring system, measuring device go
instrument that shows the extent or amount or quantity or degree of something

counter tube
a measuring instrument for counting individual ionizing events

noun.artifact

4 Subcategories

crystal counter go
a counter tube in which an ionizing event increases conductivity
Geiger counter, Geiger-Muller counter go
counter tube that detects ionizing radiations
proportional counter tube, proportional counter go
counter tube whose output pulse is proportional to number of ions produced
scintillation counter go
counter tube in which light flashes when exposed to ionizing radiation