Photomultipliertyyppisiä
Photomultipliertyyppisiä is a Finnish term that translates to "photomultiplier-like" or "related to photomultipliers" in English. It describes devices or phenomena that exhibit characteristics similar to photomultiplier tubes (PMTs) but are not necessarily PMTs themselves. Photomultiplier tubes are highly sensitive detectors of light, capable of detecting single photons. They work by converting photons into electrons, amplifying these electrons through a cascade effect, and then collecting them as a measurable electrical signal.
Devices or phenomena referred to as "photomultipliertyyppisiä" might share the high sensitivity or the light amplification