query: Why does light travel at finite speed?
positive_passages.docid: 14036
positive_passages.text: What is so special about speed of light in vacuum?
negative_passages.docid: 33110
negative_passages.text: The origin of the value of speed of light in vacuum
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: 81663
negative_passages.text: Why does gravity travel at the speed of light?
negative_passages.docid: 116728
negative_passages.text: Why does speed of light have to be constant?
negative_passages.docid: 150352
negative_passages.text: Why light moves sideways?
negative_passages.docid: 93598
negative_passages.text: Is it proven experimentally that the speed of causality (light) is the maximum speed?
negative_passages.docid: 22402
negative_passages.text: If I am travelling on a car at around 60 km/h, and I shine a light, does that mean that the light is travelling faster than the speed of light?
negative_passages.docid: 2754
negative_passages.text: Why and how is the speed of light in vacuum constant, i.e., independent of reference frame?
negative_passages.docid: 152064
negative_passages.text: Why does change in speed of a wave make it refract?
negative_passages.docid: 19850
negative_passages.text: Why is the speed of light defined as 299792458 m/s?
negative_passages.docid: 147571
negative_passages.text: How does Fermat's principle make light choose a straight path over a short path?
negative_passages.docid: 128965
negative_passages.text: Photon pair production at relativistic speeds?
negative_passages.docid: 13563
negative_passages.text: What really causes light/photons to appear slower in media?
negative_passages.docid: 10781
negative_passages.text: Accelerating particles to speeds infinitesimally close to the speed of light?
negative_passages.docid: 38865
negative_passages.text: How can a Photon have a "frequency"?
negative_passages.docid: 18007
negative_passages.text: Why does light change direction when it travels through glass?