• To detect the millionth-of-a-nanowatt signal, the Project 8 team needed a source of electrons with a definite energy, a means of collecting the radiation, and ultrasensitive amplifiers to sense the signal. 
  • The team was able to track radiation from a single electron for several milliseconds—long enough to see its frequency gradually increase as the electron spiraled inward.
  • The Project 8 team hopes to use the technique to measure the mass of the still-mysterious particles known as neutrinos, VanDevender says. They plan to study the tritium nucleus, which contains one proton and two neutrons.

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