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MIT Experts Reveal The Source Of Rainfall Scent

January 16, 2015 By James Faulkner Leave a Comment

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MIT Experts Reveal The Source Of Rainfall ScentMost of us love the smell of summer rain on a dusty road. But what is the source of rainfall scent? Massachusetts Institute of Technology researchers say they found out what causes that distinctively natural aroma that exudes form the Earth after nice rain shower-tiny particles called aerosols. But these particles might also be the cause of some air-borne diseases.

Cullen R. Buie, an associate teacher of mechanical engineering at MIT and Youngsoo Joung, a postdoctoral specialist in Buie’s lab, noticed that when a raindrop touches a permeable surface, minor air bubbles appear. These bubbles sprout upward and blast into a bubble of vaporizers, as indicated by MIT News.

By taking high-speed pictures in 600 examinations on 28 sorts of surfaces, the scientists guess that aerosols may contain fragrant components when in natural habitats. These vaporizers are then discharged during light or mild precipitation and conveyed by blasts of wind. The examination group measured the porousness of diverse soil samples by putting specimens in tubes, setting water underneath the dirt, and recording the period of time the fluid took to climb to the top.

More specifically, aerosols are minor particles suspended in the environment. Nobody had associated these particle vaporizers to the unique scent of downpour before this study, Buie remarked.

The researcher says the event could be behind the pleasant odor that goes hand in hand with a light rain, known by scientists under the name of petrichor. Petrichor is a term initially proposed by Australian specialists to depict a mixture of emanations, including microscopic organisms and plant oils that could be in charge of the scent of downpour.

Why does this make a difference? The aerosol might likewise encompass microorganisms like bacteria and viruses that usually inhabit the soil.  As such, analysts said their findings could clarify how some dirt- based illnesses are spread. And if researchers know the cause they might also find the cure.

Buie additionally noticed that vaporizers were more numerous in light and moderate rain as compared to substantial precipitation.

Youngsoo Joung also declared that, so far, people didn’t realize that these ‘mist concentrates’ could be produced from raindrops hitting the ground. This discovery ought to be a decent reference for future work, clarifying that organisms and chemicals exist inside soil and other natural components, and how they can get into the atmosphere, and potentially to people.

The results were distributed in this week’s issue of Nature Communications, an open-access exploratory journal.

Image Source: FDHW

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Filed Under: Science, Uncategorized Tagged With: about the smell of rain, MIT researchers study, petrichor event explained by MIT, rainfall can release aerosols, rainfall scent, slo-mo video explains rain smell, what causes pleasant rain smell, why it smells so good when it rains

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