It was amalgamated into the Swedish National Defence Research Institute in 1945.
[1] The Military Physics Institute was established in 1940 by the Swedish National Committee for Physics (Svenska nationalkommitten för fysik) and the year after state funding for the operation was applied.
Research within the Military Physics Institute focused on the development of new weapons of defense.
These include surveys of the military use of infrared radiation as well as the problems of shaped charge.
[1] An area in Södertörn near Grindsjön was donated by Olof Arrhenius, at which the institute built a test station for the operations.