I don't know if I am doing this right as I have not replied to this Forum before, so I may be stepping on some ones toes here, forgive me please.
In regards to the the people who are interested in understanding the term "hysterisis" and to keep it simple, just think "friction". Just about anything that moves (in any form) on this earth, has friction built in. As a visual example: take a compression spring (an automotive, internal combustion engine valve spring comes to mind) and measure the linier deflection verses load (within the elastic limits of the spring of course) and plot the curve on graph paper. The load in compressing the spring will be different than when the load is reduced when relieving the load of the spring, at the same delection readings. the difference between the two readings is the friction of the device or system. The dynamometer scale also will contribute to the friction, therefore one must consider the system when hunting for friction losses, or hysterisis of the device or system.. Yes, there is more to it than that but for a simple visual I hope this could help.
Bob
