What is Mass? 2. Mass and Fields
We examine the concept of mass from the different perspectives of Newton and Einstein. Fields are introduced, starting with the familiar gravitational and magnetic fields. Our modern understandings of the mass of an atom and the masses of the proton and the neutron are not as simple as one might expect.
Gorringe, Tim, "What is Mass? 2. Mass and Fields" (2013). Physics and Astronomy Presentations. 4.