Nanotech

Nanotech, a new revolution in technology. His presence became controversial. On the one hand, it is said to resolve the various problems of humanity, but on the other hand, many environmentalists who sued him. Various fears of adverse effects that would cause, make some people reject it.

Nanotech, although many also declined, but many pebelitian ongoing. So now the world must face a new revolution in technology, after the Industrial Revolution, then the green revolution and information revolution, which are all in fact a bad impact.

Kecanggihan Magnet

Mengenal Sumber Listrik

Magnetization history began much earlier with the ancient civilizations in Asia. There are regions in asia called Magnesia in which stones were discovered engaged each other attractive. These stones are called "magnet".

Magnets have two poles, namely:
- North pole
- South pole

Orbit motion and spin motion of electrons in atoms create magnetic fields.
Combination of the two magnetic fields can mutually strengthen or weaken each other and
produces a magnetic field of the atom.