query: What is Cherenkov radiation?
positive_passages.docid: 142906
positive_passages.text: How can a particle in a medium ever travel faster than light?
negative_passages.docid: 83320
negative_passages.text: Why we don't use gamma rays, x-rays or ultraviolet to transmit data?
negative_passages.docid: 154825
negative_passages.text: What's the difference between low energy photons and high energy photons?
negative_passages.docid: 73144
negative_passages.text: Virtual photon description of B and E fields
negative_passages.docid: 85857
negative_passages.text: Do all massive bodies emit Hawking or Unruh radiation?
negative_passages.docid: 139857
negative_passages.text: Will stationary charge radiate E.M waves if observer is accelerating?
negative_passages.docid: 36548
negative_passages.text: Does a constantly accelerating charged particle emit EM radiation or not?
negative_passages.docid: 83974
negative_passages.text: how much power is radiated by cell towers?
negative_passages.docid: 47890
negative_passages.text: What is gravitational radiation?
negative_passages.docid: 21066
negative_passages.text: Compton scattering vs. photoelectric effect
negative_passages.docid: 157077
negative_passages.text: How much electric charge do electromagnetic waves carry?
negative_passages.docid: 147803
negative_passages.text: Why does vacuum have a nonzero characteristic impedance towards electromagnetic radiation?
negative_passages.docid: 35085
negative_passages.text: If both radio waves and gamma rays can travel through walls
negative_passages.docid: 278
negative_passages.text: How can a neutron star radiate when it is neutral?
negative_passages.docid: 127355
negative_passages.text: Where is radiation density in the Planck 2013 results?
negative_passages.docid: 148864
negative_passages.text: The concept of Fermi level
negative_passages.docid: 107499
negative_passages.text: Why moving magnet releases more Magnetic radiation as the number of charges near it are increased?