practical with theory regarding magnet and magnetism
Answers
✨ Answer ✨
The domains are there in unmagnetised magnetic materials too. You can see their boundaries with a microscope when you pour very fine iron filings onto the surface of a sample. The filings collect at the boundaries where the different domains meet, because there are ‘exposed poles’ there. This phenomenon is used in the magnetic method for testing an iron casting for flaws. In unmagnetised iron, the domains are small and are orientated equally in several directions. When you apply a magnetising field, you can drag the magnetisation of the domains round into a new direction. The favourable domains, those whose natural direction of magnetisation is near to that of the field, are encouraged to grow at the expense of the shrinking of the unfavourable domains magnetised in the wrong way. Thus the bar becomes more and more favourably magnetised along directions near to the general direction of the field. A bit like a country growing and spreading its boundary into neighbouring countries!
Explanation:
✨ hope it helps you.
silentLOVER.❤️
✨ Answer ✨
The domains are there in unmagnetised magnetic materials too. You can see their boundaries with a microscope when you pour very fine iron filings onto the surface of a sample. The filings collect at the boundaries where the different domains meet, because there are ‘exposed poles’ there. This phenomenon is used in the magnetic method for testing an iron casting for flaws. In unmagnetised iron, the domains are small and are orientated equally in several directions. When you apply a magnetising field, you can drag the magnetisation of the domains round into a new direction. The favourable domains, those whose natural direction of magnetisation is near to that of the field, are encouraged to grow at the expense of the shrinking of the unfavourable domains magnetised in the wrong way. Thus the bar becomes more and more favourably magnetised along directions near to the general direction of the field. A bit like a country growing and spreading its boundary into neighbouring countries!
Explanation:
✨ hope it helps you.
SweetPoison7❤️
Thanks!!!!