🤔 How it works …….. ⁉
HOW DO PARACHUTES WORK?
A parachute works by forcing air into the front of it and creating a structured ‘wing’ under which the canopy pilot can fly. Parachutes are controlled by pulling down on steering lines which change the shape of the wing, cause it to turn, or to increase or decrease its rate of descent.
Parachutes are packed into their containers so the cells are pointing forward. As the parachute deploys, air is allowed to rush in immediately. Slight variances in the way the parachute is packed can result in off-heading openings, but the design of the parachute means it will always fly front-first.
When the skydiver comes into the landing, they use the steering toggles to slow the parachute’s descent to a minimum, facilitating a soft touch down.
All skydivers jump with two parachutes – a main and a reserve. The reason is obviously safety-driven – the main parachute may work 999 times out of 1,000, but there is still a chance of things not going to plan. A user error during the packing process might be the cause or a problem with the parachute itself.
😳Why❓❓❓
Why can’t we breathe under water.?
When you breathe in air, the air travels from your nose, down your trachea (windpipe), and into your lungs.
As the lungs branch into smaller and smaller airways, the end in specialized sacs called alveolae. Here, oxygen passes through the lung membranes into the bloodstream, and waste products like carbon dioxide flow out of the blood and into the air, and are subsequently expelled when you breathe out.
Fish also need oxygen to live, but their lungs are not designed to extract oxygen from the air. Instead, by passing the water through their specialized organs (called gills), they can remove the oxygen and eliminate waste gases.
Since humans do not have gills, we cannot extract oxygen from water. Some marine mammals, like whales and dolphins, do live in water, but they don’t breathe it.
They have developed a mechanism to hold their breath for long periods of time underwater. Eventually, however, they have to come to the surface to exhale and then take a new breath.
💁🏻♂️ GK TODAY
17 May – World Telecommunication Day World
Telecommunication Day is observed every year on 17 May. It marks the founding of ITU when the first International Telegraph Convention was signed in Paris on 17 May, 1865. It is also known as World Telecommunication and International Society Day. Since 1969, it has been celebrated annually.
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BORN TODAY 🐣💐
Govind Sakharam Sardesai (17 May 1865 – 29 November 1959), popularly known as Riyasatkar Sardesai, was a historian from Maharashtra, India. Through his Riyasats written in Marathi, Sardesai presented an account of over 1,000 years of the Indian history until 1848.
He also wrote the three-volume New History of Marathas in English
IDIOMS & PHRASES:
Kill two birds with one stone:
Get two things done with a single action
=
*ANTONYMS*
Despair x Hope
*SYNONYMS*
migrant ~ drifting
🧬 HEALTH CARE: HOME REMEDIES🩺
Coriander leaves and turmeric powder face pack for blackheads
Blend coriander leaves with two teaspoons of turmeric powder to make a fine paste. Apply this paste on your face and keep it overnight. Wash it off the next morning with cold water. Follow this routine at least twice a week to get rid of blackheads easily.
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Ch Narmada Naveen Kumar |
