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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...

A earth intercept a lot of solar power (173 thousands terawatts). That's ten thousand times more power than the planet's populations uses. So, is it possible that one day the world could be completely reliant on solar energy?  To answer that question, we first need to examine how solar panels convert solar energy to electrical energy. Solar panels are made up of smaller units called solar cells. The most common solar cells are made from silicon, a semiconductor that is second most abundant element on Earth. Crystalline silicon is placed between conductive layers of a solar cell. Four strong connections connect each silicon atom to its neighbors. This holds the electrons in place, preventing current flow.  Here's the key, a silicon solar cell uses two different layers of silicon. Working mechanism of solar panels, Image credits: acs.org N-type silicon has extra electrons, while p-type silicon has extra electron gaps, known as holes.  When two types of silicon meet at a p/n...

Bonsai is an art form that requires years of training and centuries of dedication. At 2012 International Bonsai Convention, a tree was on sale for 100 million yen, just under a million dollars.   So what is it that makes bonsai so expensive? 😮😮 Bonsai is a art of dwarfing a regular tree to create a perfect miniature representation of nature in a small pot. It has long history, originating in China, the practice of creating tiny trees and landscapes appeared as far back as the sixth century. Years of cutting, wiring, repotting, and grafting have hindered the trees' growth. Every day, the plants must be checked and frequently watered. The expertise required to grow these trees has a significant impact on their worth. They're frequently bent and twisted into shape, positioned around rocks, and even grouped together with other trees to create a miniature forest. Many of these techniques require years to master, and any errors made can can result in permanently ruining the shape. ...