query: What lets photons travel?
positive_passages.docid: 154151
positive_passages.text: How do single photons travel from here to there
negative_passages.docid: 24863
negative_passages.text: How can gravity affect light?
negative_passages.docid: 90476
negative_passages.text: Why can light (photons) bends in a curve through space without mass?
negative_passages.docid: 20412
negative_passages.text: Frequency of a photon
negative_passages.docid: 131406
negative_passages.text: Can you split a photon?
negative_passages.docid: 9645
negative_passages.text: What are the various physical mechanisms for energy transfer to the photon during blackbody emission?
negative_passages.docid: 22307
negative_passages.text: How do electric currents make light?
negative_passages.docid: 20037
negative_passages.text: Do photons have acceleration?
negative_passages.docid: 6845
negative_passages.text: What if we could give photons some mass?
negative_passages.docid: 12847
negative_passages.text: If photons have no mass, how can they have momentum?
negative_passages.docid: 98184
negative_passages.text: Can a photon be absorbed by a proton?
negative_passages.docid: 1537
negative_passages.text: Is a photon "fixed in spacetime"?
negative_passages.docid: 8099
negative_passages.text: Does a photon exert a gravitational pull?
negative_passages.docid: 78223
negative_passages.text: How does a photon travel through glass?
negative_passages.docid: 99275
negative_passages.text: Do x-rays and gamma rays also contain photons like visible light does?
negative_passages.docid: 86156
negative_passages.text: Do photons have a duration?
negative_passages.docid: 58775
negative_passages.text: What exactly does the *frequency* of a photon mean?