The source credits a well known physicist with discovering the nature of the atomic nucleus using two-dimensional scattering experiments. Who is named?

1. The source is discussing how two-dimensional collision experiments have revealed the structure of subatomic particles. 2. It states that Ernest Rutherford discovered the nature of the atomic nucleus from such experiments. 3. Newton and Einstein are not connected anywhere in this material to nuclear scattering experiments. 4. Haldane is instead quoted elsewhere in this material for his essay on animal size and terminal velocity, an entirely separate topic. _Source: OpenStax College Physics (CC BY 4.0), Ch 8 "Linear Momentum and Collisions", section 8.6 Collisions of Point Masses in Two Dimensions_