Search the collections
Electronic Valve - Philips, Geiger-Muller Tube, Type 18505, 1955-1979 Reg. No: ST 027868
- Radiation counter tube with a thin mica window at one end. Intended for detection of beta and gamma radiation.
A Geiger-Muller tube is a gas filled cold cathode diode. It is operated at a voltage just below the breakdown voltage so that any ionising particle will trigger breakdown which is detected and extinguished by the attached electronic circuitry.
Manufacturer: Philips, Holland
- Metal cylinder open at one end with a loose cover. Remnants of widow are visible. The other end has exhaust tip and a wire pin connected to electrode inside.
- Acquisition Information:
- Purchase & Subsequent Transfer from Science Museum of Victoria (SMV), 1971
|Dimensions:||54 mm (Length), 27 mm (Diameter)|
DownloadsData sheet 18505 436.8 Kb PDF
|Tagged with:||geiger muller tubes, physical apparatus instruments, thermionic electron valves|
|Themes this item is part of:||Science & Measurement Collection|
|Primary Classification:||PHYSICAL SCIENCES|
|Secondary Classification:||Atomic & Nuclear Physics|
|Tertiary Classification:||radiation measuring equipment|
|Inscriptions:||Philips/18505/MADE IN HOLLAND|
|Manufacturer:||Philips, Holland, 1955-1979|