I think the term is fine. Interaction is also too broad a term, as there are many ways to interact with something. The main intent here is to observe, interaction just follows from that.
Observation isn’t necessary. You can add a photon detector to a double slit experiment and never observe the output. A quantum state will decohere if a particle emits a photon (which it will do as it’s over zero Kelvins) and that photon hits anything
In what way is “observation” the best word for a deep infra red photon hitting air or metal that no one sees?
I think the term is fine. Interaction is also too broad a term, as there are many ways to interact with something. The main intent here is to observe, interaction just follows from that.
Observation isn’t necessary. You can add a photon detector to a double slit experiment and never observe the output. A quantum state will decohere if a particle emits a photon (which it will do as it’s over zero Kelvins) and that photon hits anything
In what way is “observation” the best word for a deep infra red photon hitting air or metal that no one sees?