query: Is there any non-experimental way to determine what substances are radioactive?
positive_passages.docid: 143228
positive_passages.text: Can we predict the half-lives of radioactive isotopes from theory?
negative_passages.docid: 139957
negative_passages.text: Conceptual half-life Question
negative_passages.docid: 89344
negative_passages.text: Radioactivity and quantum superpositions
negative_passages.docid: 38720
negative_passages.text: Is it possible to speak about changes in a physical constant which is not dimensionless?
negative_passages.docid: 76878
negative_passages.text: Which experiment can differentiate a statistical mixture from a superposition state?
negative_passages.docid: 67578
negative_passages.text: Is this a correct demonstration for why elements above untriseptium cannot exist?
negative_passages.docid: 130446
negative_passages.text: Develop a statistical test to distinguish two products
negative_passages.docid: 48055
negative_passages.text: How would one detect antihydrogen in the universe?
negative_passages.docid: 7116
negative_passages.text: Experiment to find structure of water
negative_passages.docid: 2415
negative_passages.text: What are good, reliable databases of atomic spectra?
negative_passages.docid: 2796
negative_passages.text: How to tell Mathematica that certain variables are real/imaginary, integer-valued, etc
negative_passages.docid: 80937
negative_passages.text: How to find effects of magical items?
negative_passages.docid: 107918
negative_passages.text: How does an ordinary object become radioactive?
negative_passages.docid: 69489
negative_passages.text: How do I figure out what package something is in without resorting to Google?
negative_passages.docid: 104824
negative_passages.text: How do i testfor a item a player is holding?
negative_passages.docid: 147220
negative_passages.text: How can the discrete atomic spectrum be observed?
negative_passages.docid: 155851
negative_passages.text: How to do western analysis to lung tissue?