query: Speed of light $> c$?
positive_passages.docid: 18799
positive_passages.text: If I run along the aisle of a bus traveling at (almost) the speed of light, can I travel faster than the speed of light?
negative_passages.docid: 115572
negative_passages.text: Theoretical proof of the constant of speed of light $c$ in vacuum in all frames of references
negative_passages.docid: 149674
negative_passages.text: Kinetic energy of a photon and Schwarzschild radius
negative_passages.docid: 58503
negative_passages.text: Electrons moving faster than light and backward in time?
negative_passages.docid: 58728
negative_passages.text: Why does the speed of light in vacuum have no uncertainty?
negative_passages.docid: 37345
negative_passages.text: Why can't massless particle exceed speed of light?
negative_passages.docid: 45888
negative_passages.text: Minkowski metric -- why does it follow from the constancy of the speed of light?
negative_passages.docid: 91265
negative_passages.text: Has the speed of light changed over time?
negative_passages.docid: 20440
negative_passages.text: The reference frame of $c$
negative_passages.docid: 27593
negative_passages.text: Why is travelling around the speed of light a problem?
negative_passages.docid: 17152
negative_passages.text: Do all massless particles (e.g. photon, graviton, gluon) necessarily have the same speed $c$?
negative_passages.docid: 47568
negative_passages.text: Is it experimentally proven that photons travel at speed $c$ in vacuum?
negative_passages.docid: 39399
negative_passages.text: Will free-fall object into black hole exceed speed of light $c$ before hitting black hole surface?
negative_passages.docid: 115239
negative_passages.text: Is the Speed of Light an universal spacetime constant, the velocity of electromagnetic waves, or of photons?
negative_passages.docid: 15685
negative_passages.text: Does slowing light violate relativity?
negative_passages.docid: 115786
negative_passages.text: Speed of gravitational waves and light
negative_passages.docid: 47988
negative_passages.text: Reflection At Speed of Light