query: Many times speed of light
positive_passages.docid: 5930
positive_passages.text: Why is the observable universe so big?
negative_passages.docid: 974
negative_passages.text: Speed of light in a gravitational field?
negative_passages.docid: 14186
negative_passages.text: Is it possible for information to be transmitted faster than light by using a rigid pole?
negative_passages.docid: 75580
negative_passages.text: Derivation of the speed of light using the integral forms of Maxwell's Equations
negative_passages.docid: 38865
negative_passages.text: How can a Photon have a "frequency"?
negative_passages.docid: 13817
negative_passages.text: reflection at speed of light when both mirror and viewer is travelling at the speed of light
negative_passages.docid: 111469
negative_passages.text: De Broglie wavelength, frequency and velocity - interpretation
negative_passages.docid: 67127
negative_passages.text: Does the speed of light vary in non-inertial frames?
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: 47568
negative_passages.text: Is it experimentally proven that photons travel at speed $c$ in vacuum?
negative_passages.docid: 46510
negative_passages.text: Relativity and Galaxy Rotation Speed
negative_passages.docid: 86328
negative_passages.text: What is the relative speed of two near-light speed particles headed towards each other?
negative_passages.docid: 33110
negative_passages.text: The origin of the value of speed of light in vacuum
negative_passages.docid: 115786
negative_passages.text: Speed of gravitational waves and light
negative_passages.docid: 155345
negative_passages.text: Can we use curved spacetime to measure the one-way speed of light?
negative_passages.docid: 153552
negative_passages.text: Relativistic mass as seen by different observers
negative_passages.docid: 132106
negative_passages.text: Why does the speed of light $c$ have the value it does?