closed system
Sign in to savedoes not allow certain types of transfers (such as transfer of mass) in or out of the system
~4 min read
Encyclopedic overview
A closed system is a natural physical system that does not allow transfer of matter in or out of the system, although the transfer of energy is allowed in the contexts of certain fields (e.g. physics, chemistry, engineering, etc).
Physics
Excerpted from Wikipedia’s “closed system” article, available under the CC BY-SA 4.0 licence.