It’s Saturday which means I get to post other interesting not-so-known facts about everyday life! Read away to learn something new!

The magic word for this week is PETRICHOR

It is the smell of the ground after the rain. The word is constructed from Greek word πέτρα petra, meaning stone, and ἰχώρ īchōr, the fluid that flows in the veins of the gods in Greek mythology.

In 2015, MIT scientists used high-speed cameras to record how the scent moves into the air. The tests involved approximately 600 experiments on 28 different surfaces, including engineered materials and soil samples. When a raindrop lands on a porous surface, air from the pores forms small bubbles, which float to the surface and release aerosols. Such aerosols carry the scent, as well as bacteria and viruses from the soil. Raindrops that move at a slower rate tend to produce more aerosols; this serves as an explanation for why the Petrichor is more common after light rains.

In the Filipino language, we call this alimuom. Old folks say that you can get stomach ache if you inhale this so they always tell us to stay inside the house. It’s just one of the many Filipino superstitions that some still believe and practice up to this day. 🙂



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