query: Can something go faster than the speed of light in a medium?
positive_passages.docid: 16748
positive_passages.text: What happens if light/particles exceeded the speed of light for a particular medium?
negative_passages.docid: 3635
negative_passages.text: If a mass moves close to the speed of light, does it turn into a black hole?
negative_passages.docid: 61714
negative_passages.text: Can One-Way Speed of Light be Instantaneous?
negative_passages.docid: 81663
negative_passages.text: Why does gravity travel at the speed of light?
negative_passages.docid: 94646
negative_passages.text: If a car is travelling faster than the speed of light, do the headlights still work?
negative_passages.docid: 18799
negative_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: 123854
negative_passages.text: Would time speed up near a large body of negative mass relative to observers in micro gravity?
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: 128965
negative_passages.text: Photon pair production at relativistic speeds?
negative_passages.docid: 25121
negative_passages.text: Is it really possible to break the speed of light by flicking your wrist with a laser pointer?
negative_passages.docid: 103827
negative_passages.text: Does magnetic propagation follow the speed of light?
negative_passages.docid: 156818
negative_passages.text: Doppler Shift when Light Travels Through Two Different Mediums
negative_passages.docid: 55971
negative_passages.text: Why does the (relativistic) mass of an object increase when its speed approaches that of light?
negative_passages.docid: 106814
negative_passages.text: What happens if a super fast rotating ball accelerates near speed of light?
negative_passages.docid: 35663
negative_passages.text: Is there a formula that gives the position of an object depending on the time, but which doesn't allow the object to surpass the speed of light?
negative_passages.docid: 15685
negative_passages.text: Does slowing light violate relativity?
negative_passages.docid: 26363
negative_passages.text: How does faster than light travel violate causality?