The compass is working fine, I have several plotting compasses and they all point the same direction. I'm based in Hong Kong and the compasses point to China, so I'm fairly confident its not due to a mistake in identifiing the pole. Besides, the same magnet produces the correct expected motion...
"This is the wrong way round. The electron flow is towards the screen so the conventional current is back towards the electron gun. There's nothing wrong with the LH Rule!"
When I said "into the screen" I meant back towards the electron gun (bad choice of words), i.e opposite the flow of...
When I placed the south end of a magnet on the right hand side of the green CRO spot (when timebase is off) facing towards the left hand side of the screen, I expected the spot to move downwards in accordance with the left hand rule, but instead it moves upwards. The spot also moves down when I...