Magnets, how do they work?
Jesus invented them to work that way. You don't see negative attracting negative or positive attracting positive, do you? See, being gay IS a choice.
Yes, put down the backer board on top of the subfloor.
No, you don't want to lay it on the plywood. You'll have problems in the future. Use the Hardibacker. That's what it's for.
The poles of the atoms in the magnet all point in the same direction. Thus the aggregate effect is that the whole magnet attracts other objects (when the effect of all the individual atoms in the magnet work together).
Example: When a magnetic material like iron bar is subjected to in front of a magnet, the iron bar becomes a magnet also. This principle is agreeable with the fact the our earth is als a magnet with its geographical poles with North South. 1)In a magnet, each of the small parts of the iron particles becomes symmetrically aligned with North pole and south pole (According to Ewing's theory) in opposite polarity with each other to become a integrally a magnet. Some important properties of a magnet: 1)Like poles repel and unlike poles attract . 2) All the magnets have their magnetic field. 3)They attract magnetic substances like iron, nickel, cobalt comparatively according to their nature. 4) They can be used to generate the electricity, generate mechanical energy, to detect compounds of chemicals, nature of the spins of the particles of the atoms.
