» Electroscope for ionizing radiation measurements (0109)
Immagini
DESCRIPTION
Exhibit 109 is an electroscope designed to measure ionizing radiation. It consists of a short brass horizontal cylinder with glass faces on a brass mount and supporting a vertical cylinder with a lateral opening. Inside the horizontal cylinder one sees a brass bar to which is attached a gold leaf. This bar enters the cylinder through an insulating round gasket and is extended above into the horizontal cylinder. To operate one charges the electroscope with positive charge which causes the gold leaf to diverge at a large angle. Then a radioactive source is introduced through the opening in the vertical cylinder. Now as the electrons from beta decay are collected by the positively charged brass rod, the descent of the gold leaf is a measure of the radioactivity.BIBLIOGRAPHY
- [1] John Zeleny. A lecture Electroscope for Radioactivity. Physical Review. Vol. 32:255-256. 1911.
- [2] John Zeleny. A lecture Electroscope for Radioactivity and other Ionization Experiments. Physical Review. Vol. 32:581-584. 1911.
- [3] Central Scientific Company Catalog J-150 (1950): URL [ http://www.humboldt.edu/scimus/HSC.36-53/CatDesc/ZelElecScpCSC50.jpg?36,39 ]
Dati Catalografici
| Data di costruzione: | --- |
|---|---|
| Data di carico: | Ignota |
| Nr. Inventario: | Ignoto (Ignoto) |
| Costruttore: | Costruttore sconosciuto |
| Materiale: | vetro, ottone, metallo, argentato |
| Dimensioni: | Lunghezza: 38 cm; Larghezza: 20 cm; Profondità: 9 cm |
| Conservazione: | cattivo |