> There is such a thing as interaction-free measurements: you can take photos of things without ever letting light hit a detector and you can tell whether a bom

> There is such a thing as interaction-free measurements: you can take photos of things without ever letting light hit a detector and you can tell whether a bomb is "active" without actually interacting with the detonator. Can you provide a link that talks about that? It goes against my understanding of why there's an uncertainty principle at all