As part of an experiment with x-rays in 1909, Rutherford was shooting a beam of alpha particles (or alpha ... But every now and then, a particle bounced back as though it had hit something solid.

Ernest Rutherford's family ... a single particle. The particle had a positive charge, so it must have come from nucleus: he called this new particle a proton. With this experiment, he was the ...

The Axion Longitudinal Plasma Haloscope (ALPHA ... site of the experiment in Wright Lab. ALPHA will extend the search for a hypothetical dark matter candidate—a very low-mass particle called ...