![](https://coimages.sciencemuseumgroup.org.uk/240/723/large_thumbnail_1930_0411__0001_.jpg)
Apparatus for determining the refractivity of argon
- Made:
- Unattributed place
![Apparatus for determining the refractivity of argon](https://coimages.sciencemuseumgroup.org.uk/371/769/small_thumbnail_smg00062634.jpg)
![Apparatus for determining the refractivity of argon](https://coimages.sciencemuseumgroup.org.uk/20/579/small_thumbnail_1930_0435__0001_.jpg)
![Apparatus for determining the refractivity of argon](https://coimages.sciencemuseumgroup.org.uk/20/580/small_thumbnail_1930_0435__0002_.jpg)
Apparatus for determining the refractivity of argon
Many objects in Lord Rayleigh’s collection are annotated with a reference to the volume and page of his collected works where they are discussed.
Object 1930-435 is inscribed with pencil “IV p 219”. Inscription also says “Slits for using 3 inch [or ‘single’?] telescope as interferometer”.