Did some of the aplha particles back trace their path after hitting the gold foil ? (Turn by 180 degrees.) If so, how were they detected ?
The notion of naturalness is important in particle physics, especially supersymmetry. I was a little surprised, then, that the idea, or at least the name, is apparently only ~30 years old ('t Hooft, ...
It is well-known even among the lay public (thanks to popular books) that string theory first arose in the field of strong interactions where certain scattering amplitudes had properties that could be ...