A rainy day typically washes your car clean, but it also slowly erodes at the surface. The explanation once seemed clear: rain corrodes metal because it carries salts, acids, and pollutants, but new research identifies a hidden culprit behind a water drop’s damaging effects.
Water drops can become electrically charged when sliding onto a surface. That tiny spark is powerful enough to break down protective coating and lead to corrosion of the metal, according to a recent study published in Nature. The findings highlight an overlooked reason for surface damage caused by water and could potentially change current tools for preserving metal…
Read the full article at GIZMODO.COM
