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Magnets and magnetic fields can and do exist apart from any energy input/output (see Lesson A-5A). The pull or push experienced when playing with magnets is a force not energy. The distinction between force and energy is addressed in Lesson C-5A. This is to say that at this level, I would keep them separate and not attempt to get into “magnetic energy.”
Regarding your second question, energy for the heart’s pumping and all other body movements including cell division, comes from the potential energy in food molecules. That energy is released as the molecules are oxidized in cells (see Lesson B-9). Of course there are many more details that you might go into as you wish.
Thank you for your questions. Please ask further as you wish.
Thanks CarolDecember 23, 2014 at 5:50 pm in reply to: Error in text re magnetic fields going through iron #443
A horseshoe magnet is simply a bar magnet bent into a “U” such that the two poles (north seeking and south seeking) are side by side.
Bernie NebelDecember 18, 2014 at 5:34 pm in reply to: Error in text re magnetic fields going through iron #438
Are you using a horseshoe magnet or a button or bar magnet? When I wrote this, I had in mind a horseshoe magnet. The iron between the poles effectively “short circuits” the magnetic field so that the paperclip on the opposite side will not stick. On the other hand, if you are using a very strong horseshoe magnet, the field may not be totally short circuited and some sticking of the paperclip on the opposite side may be observed.
If you are using a button or bar magnet, however, there is only one pole touching the can and the field around that pole is conducted through. (It is like what happens in hanging a “chain” of paperclips from a magnet.)
Please let us know if this solves the problem. If not, please ask again.
Yes, please post a brief description of what you have and add the link. I think that will be best.
Thanks Jessica. Please add your Montessori-BFSU correlation chart.