I understand that a white dwarf is supported by the Pauli Exclusion Principle and that the larger the gravitational force against them, the closer the electrons must pack.
But I have two queries: One is that for more massive white dwarf stars, there would be more particles present in the star's core, which should take up more space. Is there any way in seeing why this isn't a significant effect?
Also, we haven't studied quantum mechanics and the Pauli Exclusion Principle in detail so it seems weird to me that electrons can just pack closer. This is my understanding, the Pauli Exclusion Principle means no two electrons with the same spin can share the same quantum state. For this effect to produce a force, wouldn't it mean that the electrons were already the closest they could be, as any closer they would be in the same quantum state. How does the Pauli Exclusion Principle work to counteract gravity here?