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Originally Posted by GUILLE To understand the whole paper, I need to understand what helicity means here? |
We know that lines of forces exist for a magnetic field as well as electric field. If we place a piece of paper over a permanent magnetic and sprinkled some tiny iron fillings allover and shake the paper we can see that the fillings begin to align along these lines of forces. For helicity, these lines cross each other and become twisted and entangled into different convoluted knott structures.