Difference Between PhD After Bachelor & Master in Physics

[jamalkoiyess]

Hello PF,
Can somebody please explain to me the difference between a PhD after a bachelor and after a master's degree in physics. Please explain everything about the difference of duration and of knowledge.

 

[Ygggdrasil]

Here is a nice article on the topic: https://www.physicsforums.com/insights/the-us-graduate-school-system/

 

[jamalkoiyess]

Here is a nice article on the topic: https://www.physicsforums.com/insights/the-us-graduate-school-system/

Thank you very much that was very helpfull :)