There's a good scientific reason why water gets things so clean: its molecules have a slight electrical polarity (one end is positively charged and the other is negatively charged), so they tend to stick to things all by themselves. Detergents (soap chemicals) help water to do its job even better by breaking down gunge and grease and making it easier for water to flush away. But some kinds of ground-on dirt just won't budge, no matter how hard you try. That's when a pressure washer comes in really handy. It uses a narrow, high-pressure jet of hot or cold water to blast dirt free.
Original Article Source Credits: Explain That Stuff , https://www.explainthatstuff.com/
Article Written By: Chris Woodford
Original Article Posted on: May 9, 2020
Link to Original Article: https://www.explainthatstuff.com/pressurewashers.html