Web Results


1) Via heat: ferromagnet materials will lose their magnetism if heated above a ... the magnet from the heat will permanently disrupt the magnetic domain structure of ... is transmitted through the material via a shock, such as being dropped or hit  ...


Black lines (called magnetic force lines) show the direction of the field in space. ... if you hit a magnet several times real hard it can lose almost all its strength.


Hi, Does anyone know whether a bar magnet would lose some of its magnetism if it is bent and broken into two? ... The strength of a magnet is related to its size. ... Severe vibration (eg repeatedly hitting them with a hammer) ... The magnetic field required to magnetize (or demagnetize) the magnet is greater ...


At some point, in between the weakening of the overall magnetism and the availability ... Cooling the material will cause magnetic domains to form again at the Curie .... Then even if the magnet is cooled back down, it will have lost most of its net ... Usually the strength of a permanent magnet does grow slightly as it is cooled.


Heating a magnet past its Curie point will destroy the long range ordering. ... reduce the strength of the (electro-)magnetic field, the magnetism of the magnet can ... becomes a strong magnet in the present of the current but weaken drastically ...


Mar 12, 2009 ... I know magnets can lose its magnetic properties if exposed to heat, but is ... it loose its magnetic field. repetitive shock (as in hitting it with a hammer) .... It might still retain a weak magnetism, but it will be much less than the original strength. ... and the relative motion of other magnetic fields can weaken them.


Written By: msilvestro Category: Magnets Date: 2015-08-02 Hits: 4002 ... While the passage of time does weaken the strength of a magnet, the changes ... Temperature variation can cause magnets to lose some or all of their magnetic charge.


Br is the measure of its residual magnetic flux density in Gauss, which is the maximum ... Let's do an experiment to show the effect of temperature on magnets. .... Turn the pin so that it is now lined up in an East-West direction and hit it another ...


Permanent magnets can lose their magnetism if they are dropped or banged on ... The reason that would be hard to bump a piece of iron and make it magnetic is ... Field strength is linear with the current in magnets until the magnet saturates.