Ising earned his first academic degree (filosofie kandidat/Bachelor of Arts) at Uppsala University in 1903 and continued studying at Stockholm University receiving his Ph.D. in 1919, and receiving an honorary professor title in 1934.
He is best known for the invention of the linear accelerator concept in 1924, which is the progenitor of all modern accelerators based on oscillating electromagnetic fields. His article was then taken up and turned into practice by Rolf Widerøe, also starting the development of cyclic accelerator structures like the cyclotron.
He was elected to the Swedish Academy of Sciences in 1935, being a member of the Nobel Committee for Physics from 1947–1953, together with former Nobel Laureate and chairman Manne Siegbahn, Svante Arrhenius, Erik Hulthen, Axel Edvin Lindh, Ivar Waller, and Gudmund Borelius.
- from the Swedish deadbook: Sveriges dödbok 1947-2003, CD-ROM v3.0. Sveriges Släktforskarförbund. 2005.
- Rensfelt, K.-G. "Preface" (PDF). Proceedings of the European Particle Accelerator Conference 1998. Stockholm.
- Ising, Gustaf (1919). Undersökningar rörande elektrometrar (en.: Investigations concerning electrometers) (Ph.D. thesis) (in Swedish). Stockholm College (Gleerup). p. 374.
- Vem är det: Svensk biografisk handbok 1939 (in Swedish). P A Norstedt & Söners Förlag. 1939. p. 403.
- Ising, Gustav (1924–1928). "Prinzip Einer Methode Zur Herstellung Von Kanalstrahlen Hoher Voltzahl". Arkiv för matematik, astronomi och fysik (in German). 18 (30): 1–4.
- Widerøe, R. (17 December 1928). "Ueber Ein Neues Prinzip Zur Herstellung Hoher Spannungen". Archiv für Elektronik und Übertragungstechnik (in German). 21 (4): 387.
- Rentetzi, M. (2007). Trafficking Materials and Gendered Experimental Practices. Radium research in early 20th century Vienna. Columbia University Press.