Factory Wholesale PriceList for Strong magnets to Marseille Manufacturer
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This shows the diamagnetic response of a mechanical pencil lead(mostly of graphite).
the magnet used is a small neodymium magnet salvaged from a discarded vibration motor used in hand-held phones, attached to an iron bar for handling.
The first half of the video is just a demonstration, showing the small cylinder at the end of the bar IS a magnet.
The latter half shows the pencil lead, mounted on a cylindrical surface so that the lead can rotate easily when applied a small force, pushed away from the magnet.
Not every brand of pencil leads response this way. Many of them are attracted to the magnet(paramagnetic) or does not respond in any way(too small a para- or dia- magnetism to be detected). Only some of the brands shows enough strength, if ever, of diamagnetism.
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