Quantum Physics

So this write-up is regarding Schrodinger's cat thought experiment of quantum physics. This thought experiment was introduced by Erwin Schrodinger, an Austrian-Irish physicist. He was not sure of the Copenhagen theory which mentioned that the quantum states of two objects are not predetermined until observed. So Schrodinger gave an example of a cat in chamber with a vial of poison, a hammer and a radioactive material. When the radioactive material decays, the hammer gets triggered and the vial breaks. This leads to the death of cat, but in case this is not observed by a measuring device, then is the cat alive or dead? But still it was not enough to disprove the superimposed states theory. The observer effect was clearly seen in the experiments with the quantum particles.