X1013071142-00003-00923</DOCNO> Moving electric charges produce magnetic fields.
(X1013071142-00003-00923</DOCNO>; produce; magnetic fields) Context(X1013071142-00003-00923 < / DOCNO > produce,List([0, 63))):(X1013071142-00003-00923</DOCNO>; produce magnetic fields Moving; electric charges)
X1013071142-00003-00923 < / DOCNO > produce,List([0, 63))
X1013071142-00003-00923</DOCNO> X1013071142-00003-00923</DOCNO>
produce produce magnetic fields Moving
magnetic fields
electric charges