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Airbags; how do they work?

By Amrit Gotame
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Even if the driver secured properly, an accident would occur at high speeds if there was no airbag. It is a significant engineering challenge to bring the human body to a stop from a high speed in less than 100 milliseconds without causing significant bodily harm. Let's have a better grasp of this life-saving technology by looking at the mechanism of airbag inflation, which is triggered by chemical explosions. Seatbelts are meant to keep the human body from moving, but they can cause internal organ injury if they apply too much stress on the chest area during an accident. Modern seat belts use a torsion bar to slightly release the seat belt in the event of a large impact on the chest. This action causes the upper body to move forward somewhat, but as the torsion bar is released, the upper body's movement is stopped. Working Mechanism of Airbags, Image credit; whyflies.org Please notice that the sear belt only arrests the motion of your upper body, omitting your neck and head, w...
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Sinkholes; how do sinkholes form?

By Amrit Gotame
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Imagine the ground beneath your feet or your house suddenly collapsing and forming a large hole in the ground. It's a terrifying thought. Sinkholes are uncommon, but when they do develop, they can be fatal. Sinkholes form when the ground underneath the land surface is unable to support it. Sinkholes can occur for a variety of causes; continue reading to learn more about them. Sinkholes are widespread in areas where the geology beneath the land surface contains limestone, carbonate rock, salt beds, or rocks that can be dissolved naturally by groundwater passing through them. Underground caves and caverns form as the rock degrades. Sinkholes are spectacular because the land normally remains intact for a long time until the subsurface areas get too large. A abrupt collapse of the ground surface can occur if there is insufficient support for the land above the voids. Formation of sinkhole; Image credits - cartleton.edu What is a "sinkhole"? When it rains, water stays inside t...
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Caffeine keeps us awake; the real science behind it?

By Amrit Gotame
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Every year, around 100,000 metric tons of caffeine are consumed worldwide. This is the equal of 14 Eiffel Towers in weight. Caffeine is mostly found in coffee and tea, but it can also be found in sodas, chocolates, caffeine pills, and even decaf beverages. Even if we haven't gotten enough sleep, caffeine makes us feel alert, focused, cheerful, and active. But it can also make us feel worried and spike our blood pressure. It is the most extensively used drug in the planet. So how does it keep us awake? Caffeine evolved in plants and performs a variety of functions. It is harmful to insects in high concentrations, as it is found in the leaves and seeds of some species. However, at little doses, such as those present in nectar, it can actually help them remember and revisit flowers. Caffeine functions as a stimulant for the central nervous system in humans.  It keeps us awake by blocking one of the body's key sleep-inducing molecules, a substance called adenosine. Your body requir...
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