Hostel Hrob prosím na vědomí do permanent magnets lose their magnetism nadmořská výška šicí stroj Metafora
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A permanent magnet is a magnet that does not lose its magnet field. However what makes a magnet permanent? In order to understand this we need to know. - ppt download
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The Difference Between Electromagnets & Permanent Magnets | Eclipse Magnetics
Can Magnets Lose Their Magnetism? – Innovative Magnetic Technologies