title: Water resistance
text: # Water resistance
  
  Water resistance may refer to:
  
  * The WR mark on a wristwatch indicating its ability to withstand exposure to water
  * The IP code on a mechanical or electrical enclosure indicating its ability to resist the ingress of water
  * Wet strength, a measure of the strength of paper when wet
  * Waterproofing, making objects or structures resist the ingress of water under specified conditions
  * Fluid resistance, drag in water
  * Lotus effect (water-resistance in plant leaves)
  * The electrical resistivity of water (0.2 Ω·m sea water, 2 to 200 Ω·m drinking water, 180000 Ω·m deionized water at 20°C)
  
  See also:
  
  * Hydrophobe
  * Superhydrophobe
  