I've been following emdrive for a while now. Prof McCulloch's book and emdrive paper provide the best description I have yet seen of an emdrive. As mentioned above there are no 'laws' of physics, just a collection of theories which seem to describe observed facts well. The theories change or are expanded to suit fresh observations. The best theories can be used to make predictions and provide explanations in disparate other problematic observations and this is the case with Prof McCulloch's work.
If NASA are prepared to use resources to send one of these things to orbit then the case for emdrive is at least still open. Speaking personally, I would like to use a 3d printer to build a 10x10x10 Cu block of these cavities, that should give a definitive answer. How about it Mr Musk?
Problems always arise on the edge of physics from the difficulties of making measurements. That's the fun of the thing...
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I've been following emdrive for a while now. Prof McCulloch's book and emdrive paper provide the best description I have yet seen of an emdrive. As mentioned above there are no 'laws' of physics, just a collection of theories which seem to describe observed facts well. The theories change or are expanded to suit fresh observations. The best theories can be used to make predictions and provide explanations in disparate other problematic observations and this is the case with Prof McCulloch's work.
If NASA are prepared to use resources to send one of these things to orbit then the case for emdrive is at least still open. Speaking personally, I would like to use a 3d printer to build a 10x10x10 Cu block of these cavities, that should give a definitive answer. How about it Mr Musk?
Problems always arise on the edge of physics from the difficulties of making measurements. That's the fun of the thing...