21. Let's say I have a big hollow ball made of some magnetic material or other. 22. In 1862, Vacheron Constantin became a member of the Association for Research into non-magnetic materials . 23. Less familiar phases include ferromagnetic phases of magnetic materials . 24. Jay came across an advertisement for a new magnetic material being produced by a company. 25. A polymagnet can be easily made from reprogramming a conventional magnetic material in few minutes. 26. Coilguns, on the other hand, have a barrel made up of coils of magnetic material . 27. At present, Dongyang has become the largest magnetic material production and exportation base in China. 28. The magnetic material may be " air ", but it is a transmission line transformer. 29. Another key invention by Dr . Buck was a method of non-destructive sensing of magnetic materials . 30. Research within WCM focuses on several areas related to production, characterisation and applications of magnetic materials .
