Choose first, drink right
Choose the right water first, then drink it right
Water, H2O, is an inorganic compound made of hydrogen and oxygen joined at an angle of 104.45 degrees. At normal temperature and pressure it is a colorless, odorless, transparent liquid; pure water is rare in nature. Water is usually a solution of acids, bases, salts and other substances, and such solutions are generally all called water. An ordinary water molecule H2O cannot exist alone; it usually appears in overlapping form, like a bunch of grapes, called a water molecule cluster. Because of exhaust pollution, sulfuric acid H2SO4, sulfurous acid H2SO3 and carbonic acid H2CO3 form in water and make it acidic. And because of heavy metal pollution, such as mercury Hg, lead Pb, cadmium Cd and aluminum oxide Al2O3, the water exists as large molecular clusters.
Closely related to water, it exists in light as negative-ion particles carrying energy, called light particles, which flow as light radiates; this flow is called an electromagnetic wave. Among these, the electromagnetic wave with an energy value of 0.004 watt/cm2 and a wavelength of 4–14 μm is the best solar electromagnetic energy for promoting biological growth and activating cells and tissues, generally called growth rays.