eMdrive, frankly I don't get the physics involved in the generation of thrust

Newtonian mechanics is able to explain how rocket thrust works, but what about the eMdrive?

See this article, it teaches how to build and test an home made eMdrive (recycling parts from a micro wave), correct me if I am wrong, I know that thrust requires a reaction, equal momentum change in the opposite direction, and … I am not seeing any explanation for how that would occur with the eMdrive …

The Emdrive is bullshit :)

I think you could power it with chemical based nuclear fusion.