Origin: or spin transport electronics. Spintronics. Spintronics, also known as magnetoelectronics, is an emerging technology exploiting both the intrinsic spin of the electron and its associated magnetic moment, in addition to its fundamental electronic charge, in solid-state devices.
Vitamin supplements are mostly a waste of money. Vitamin and mineral supplements used to live on one shelf in the pharmacy. Now there are whole emporia devoted to them. Vitamin and mineral supplements used to live on one shelf in the pharmacy. Now there are whole emporia devoted to them. Which tells you how Americans feel about the promise of finding health in a bottle.
Excess of some vitamins, especially fat-soluble vitamins such as vitamin A, can be toxic. Vitamins are classified as either water-soluble or fat-soluble. In humans there are 13 vitamins: 4 fat-soluble (A, D, E, and K) and 9 water-soluble (8 B vitamins and vitamin C).