| http://www.w3.org/ns/prov#value | - The desired spring force to resiliently constrain the mobile magnetic component can be provided by utilizing a number of different means, for example, i) actual mechanical spring connecting the mobile magnet to a fixed position, the spring having a bent wire, strip, sheet or other configuration, ii) mechanical spring connecting the mobile magnet to the stationary magnet, iii) the spring force in a
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