Do magnets have a longer reach in a vacuum chamber?

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Magnets do not have a longer reach of attraction in a vacuum chamber compared to air. The magnetic permeability of air is only slightly greater than that of a vacuum, making their effects nearly identical. Consequently, the shape and strength of a magnet's field remain unchanged in both environments. The consensus is that the attraction force is not significantly different in a vacuum. Therefore, the presence of a vacuum does not enhance a magnet's reach.
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Do magnets have a longer reach of attraction in a vacuum chamber?
 
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All else being equal, I don't think the attraction force would be significantly different in a vacuum than in air, because the magnetic permability of air is only slightly greater than the permability of a vacuum.
 
The permeability of the vacuum of free space is practically identical with that for air. So, no, the field around a magnet remains the same shape and strength.
 

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