» Wollaston Goniometer (0552)
Immagini
DESCRIPTION
Exhibit 552 is a protractor invented by Wollaston that is used to measure the dihedral angles of crystals. It is mounted on a heavy tripod having leveling screws. It is a protractor based on reflection: the angle measured was that between the normals to the faces of the crystal.The instrument is composed of two parts: the crystal carrier and the protractor, a graduated vertical disk with a scale from 0 to 360° and with a precision of one minute [2].
ISCRIZIONI
- Cauchoix di Parigi
BIBLIOGRAPHY
- [1] URL [ http://www.liceoeqvisconti.it/var/data/955/35_goniometro_di_Wollaston.DOC ]
- [2] B.L. Worsnop, H.T. Flint, "Advanced Practical Physics for Students", Asia Publishing House, New Delhi, 1961, pag. 252: Measurements of the Angles of crystals by Wollaston's Goniometer
Dati Catalografici
| Data di costruzione: | Primi decenni XIX secolo |
|---|---|
| Data di carico: | 1835-05-25 |
| Nr. Inventario: | 517 (Generale dal 1874) |
| Costruttore: | Cauchoix di Parigi |
| Materiale: | ottone |
| Dimensioni: | diametro del goniometro: 22 cm; altezza complessiva: 28 cm |
| Conservazione: | cattivo (Manca la manopola per far ruotare il goniometro) |