Search results
Sep 28, 2017 · September 28, 1781: The Beginning of the End. By Christine Gibson. For six years, the specter of defeat had dogged Gen. George Washington’s every thought. As advantage after advantage slipped away, the American coffers dried up, and the most promising general betrayed the Revolution, it looked more and more like Washington and his motley army ...
The earliest known use of the noun backwash is in the 1870s. OED's earliest evidence for backwash is from 1876, in the writing of Mary Braddon, novelist. backwash is formed within English, by compounding.
In terms of water treatment, including water purification and sewage treatment, backwashing refers to pumping water backwards through the filters media, sometimes including intermittent use of compressed air during the process. Backwashing is a form of preventive maintenance so that the filter media can be reused.
OED's earliest evidence for backwash is from 1775, in a dictionary by John Ash, lexicographer and grammarian. It is also recorded as a noun from the 1870s. backwash is of multiple origins.
the backward movement of waves, or the backward movement of water caused by something, such as a boat, passing through it: The waterskier was caught in the backwash from a motorboat. SMART Vocabulary: related words and phrases. Floods, tides & currents. atmospheric river. deluge.
Oct 29, 2009 · The Revolutionary War (1775-83), also known as the American Revolution, arose from growing tensions between residents of Great Britain’s 13 North American colonies and the colonial...
People also ask
What does backwash mean?
What is backwashing in water treatment?
What happens at the end of a backwash cycle?
What is a backwashing cycle in a water filtration plant?
Oct 29, 2009 · Reconstruction (1865-1877), the turbulent era following the Civil War, was the effort to reintegrate Southern states from the Confederacy and 4 million newly-freed people into the United...
