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Technology ArticleStory of the Vacuum Cleaner A vacuum cleaner (in colloquial British English also hoover) is a device that uses an air pump to create a partial vacuum to suck up dust and dirt, usually from floors. Most homes with carpeted floors in developed countries possess a vacuum cleaner for cleaning. The dirt is collected by a filtering system or a cyclone for later disposal. A vacuum's suction is caused by a difference in air pressure. A pump reduces the pressure inside the tube. Atmospheric pressure then pushes the air through the carpet and into the tube, and so the dust is literally pushed into the bag. Tests have shown that vacuuming can kill 100% of young fleas and 96% of adult fleas. Some vacuum cleaners include an electric mop in the same machine: for a dry and a later wet clean. Wikipedia Disclaimer Above information is from wikipedia and is freely distributed under the GNU license Also See: All Articles |