Our Beaded Dome Ohm's law paperweight features your choice of AC or DC Ohm's law formulas.   It really is outstanding and would make a super addition to your home desk or office.  This is a beautiful, heavyweight Ohm's law product and would make an excellent gift!  All of our paperweights are handcrafted right here in the United States of US materials.  Our paperweights and packaging are all American-made!