Question

In spontaneous parametric downconversion, a high-energy one of these particles is converted into an entangled pair. These particles trace circular orbits at 1.5 times the Schwarzchild (15[2])radius, their namesake (15[1])sphere. These particles are exchanged (15[1])in interactions described by QED. (15[1])These particles transfer their momentum to solid bodies to create radiation pressure. (-5[1])These spin-zero particles undergo both Raman and (15[1])(*) Rayleigh scattering. The energy of these particles equals (10[1])Planck’s constant times their frequency. Firing these particles at a piece of metal ejects electrons in an effect described by Einstein. (10[1])For 10 points, name these particles, (-5[1])the quanta of light. (10[1])■END■ (10[1])

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