![dalen dalen](https://www.tekportal.net/wp-content/uploads/2019/01/dalen-6243.jpg)
< /ˈgʊs tɑf/, 1869–1937, Swedish inventor: Nobel Prize in Physics 1912.
noun
- Nils Gustaf. 1869–1937, Swedish engineer, inventor of an automatic light-controlled valve known as `Solventil’. Nobel prize for physics 1912
< /ˈgʊs tɑf/, 1869–1937, Swedish inventor: Nobel Prize in Physics 1912.
noun