query: Does light know the future?
positive_passages.docid: 12916
positive_passages.text: How does a photon experience space and time?
negative_passages.docid: 112411
negative_passages.text: What happens when a photon reaches the "edge" of the universe?
negative_passages.docid: 12267
negative_passages.text: (Almost) double light speed
negative_passages.docid: 8077
negative_passages.text: Photons in expanding space: how is energy conserved?
negative_passages.docid: 52418
negative_passages.text: What exactly is a quantum of light?
negative_passages.docid: 92853
negative_passages.text: Did Nebula know what would happen?
negative_passages.docid: 11021
negative_passages.text: Will the night sky eventually be bright?
negative_passages.docid: 104822
negative_passages.text: How does the human eye knows how far the object from which the photon was reflected?
negative_passages.docid: 12597
negative_passages.text: Does the speed of medium affect the path of light?
negative_passages.docid: 32532
negative_passages.text: how to model the exponential growth of luminosity when you flick a light on
negative_passages.docid: 155738
negative_passages.text: Can light be a spinor?
negative_passages.docid: 4005
negative_passages.text: If refraction slows down light, isn't it possible to hold light still?
negative_passages.docid: 82218
negative_passages.text: Do we really not know why atoms 'decide' to produce a photon?
negative_passages.docid: 84719
negative_passages.text: Why does a light beam in a moving light clock follows a V shaped path?
negative_passages.docid: 127351
negative_passages.text: Why can we only "see" reflected light?
negative_passages.docid: 74101
negative_passages.text: How is a vacuum able to propagate light?
negative_passages.docid: 47568
negative_passages.text: Is it experimentally proven that photons travel at speed $c$ in vacuum?