Washboarding
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Washboarding or corrugations is the formation of periodic, transverse ripples in the surface of gravel and dirt roads. Washboarding occurs in dry, granular road material with repeated traffic, traveli
Washboarding effect on a road
Fine-grained soil particles on a sandy road in Baja California
Semi-cohesive soil on a road in Kalbarri National Park, Western Australia
Coarse-grained soil particles on a gravel road in Fremont, California
Washboard (laundry)
Videos
A washboard or a scrubbing-board is a tool designed for hand-washing clothing. With mechanized cleaning of clothing becoming more common by the end of the 20th century, the washboard has become better
Washboarding
…wheels rolling over unpaved roads at speeds sufficient to cause bouncing of the wheel on the initially unrippled surface and take on the appearance of a laundry washboard. Most studies of washboarding pertain to granular materials, including sand and gravel. However, other work suggests that the phenomenon may occur in…
Woman on an Israeli kibbutz using a washboard to do laundry
A glass washboard