» Gardien Condenser for counting ions in the air for counting ions in the air (0134)
Immagini
DESCRIPTION
Exhibit 134 is a condenser designed by H. Gerdien in 1905 to measure the number of positive and negative ions present in air. It is essentially a condenser formed by two concentric cylinders between which an air flow is maintained by a ventilator and the ions captured from the air cause a leakage current which is compensated by a sensitive electronic control.ISCRIZIONI
- Reca inciso il numero: N{\textdegree} 1055
Targa costruttore fissata sullo strumento con scritta: Spindler & Hoyer Werkstatte fur Prazisionsmechanik Goettingen
BIBLIOGRAPHY
- [1] www.astropa.unipa.it/biblioteca/Strumenti/e-catalogues/Spindler1904a/Catalogo.html
- [2] URL [ http://n-ion.blogspot.com/2007/07/measurement-principles.html ]
Dati Catalografici
| Data di costruzione: | --- |
|---|---|
| Data di carico: | ignota |
| Nr. Inventario: | Ignoto (Ignoto) |
| Costruttore: | ideato da Gerdien costruito da Spindler & Hoyer, Werkstatte fur Prazisionsmechanik |
| Materiale: | lega, ferro, ottone |
| Dimensioni: | 57 cm x 16 cm x 29,5 cm |
| Conservazione: | buono |