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 ... dislodging 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 ...

When U.S. President Donald Trump claimed during his inaugural address that Americans “split the atom,” a ripple of irritation ...

The scientists observed the following from their experiment ... the foil a very small number of alpha particles came straight back off the foil Rutherford considered these observations and ...