I need a little help trying to determine the possibility of magnetizing and demagnetizing an object. My question is as follows:
Is it possible to line two different slabs of thick glass with magnetic strips that can be magnetized to one another for the purpose of holding them together where they do not separate without great opposing force but that can also be demagnetized for the purpose of pulling the two slabs apart?
If there is a way to demagnetize these slabs to allow them to be separated, by what process is this achieved? Is it a reaction that could be activated and deactivated by a button?