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charged dust particles fall to the ground

Negative ion purifiers re-create the same process that nature uses to keep the air fresh and clean. To understand how these purifiers work, you need to first understand the role negative ions play in nature. An ion is any atom that has a positive or a negative charge. A positively charged ion will seek a negatively charged one to unite with and then turn into something totally new and available. In nature, ions are generated in abundance wherever energy is transferred into the air such as ultra-violet light from the sun, or by lightning and thunderstorms. Negative ions remove airborne contaminates from the air you breathe. Negative ion purifiers generate the negative ions that nature uses to significantly reduce the amount of dust and other particles in the air. Most floating contaminates and allergens are positively charged. In environments where high densities of negative ions exist, they are able to reverse the charge of floating contaminates to a negative charge. This results in a magnetic attraction among the floating pollutants in the air, causing them to clump together. As a result, they become too heavy to remain floating and fall to the ground -- out of the air you breathe.
Way Healthier Home? Air Purifier

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