query: If we could weigh antimatter
positive_passages.docid: 25220
positive_passages.text: Has the gravitational interaction of antimatter ever been examined experimentally?
negative_passages.docid: 89206
negative_passages.text: Is there a mass spectrometer software that can measure the mass of a proton
negative_passages.docid: 112625
negative_passages.text: Reduced mass in quantum physics (Hydrogen Atom)
negative_passages.docid: 50575
negative_passages.text: Collisions in space/vacuum
negative_passages.docid: 77731
negative_passages.text: 'size' of a photon
negative_passages.docid: 467
negative_passages.text: Matter-antimatter asymmetry problem
negative_passages.docid: 125791
negative_passages.text: What happens if we put together a proton and an antineutron?
negative_passages.docid: 126730
negative_passages.text: What is the mass of Photon or Light Particle?
negative_passages.docid: 20811
negative_passages.text: Anti-Particle of Neutron
negative_passages.docid: 13269
negative_passages.text: How would we tell antimatter galaxies apart?
negative_passages.docid: 27986
negative_passages.text: Is the graviton hypothetical?
negative_passages.docid: 45174
negative_passages.text: Measuring extra-dimensions
negative_passages.docid: 109872
negative_passages.text: How would neutron matter appear to the naked eye?
negative_passages.docid: 95125
negative_passages.text: Rest mass of the photon
negative_passages.docid: 29686
negative_passages.text: Why would Antimatter behave differently via Gravity?
negative_passages.docid: 89295
negative_passages.text: The interpretation of mass in quantum field theories
negative_passages.docid: 41209
negative_passages.text: Does matter with negative mass exist?