🤔 How it works …….. ⁉
How a Pendulum watch works?
What is a pendulum?
A pendulum is a rod hanging vertically from its top end (or a weight called a bob hanging from a string) that swings from side to side due to the force of gravity. As Italian scientist Galileo Galilei (1564–1642) discovered, the clever thing about a pendulum is that it always takes the same amount of time to make one complete swing.
A pendulum works by converting energy back and forth, a bit like a rollercoaster ride. When the bob is highest (furthest from the ground), it has maximum stored energy (potential energy). … So as the bob swings (oscillates) back and forth, it repeatedly switches its energy back and forth between potential and kinetic.
If there were no friction or drag (air resistance), a pendulum would keep on moving forever. In reality, each swing sees friction and drag steal a bit more energy from the pendulum and it gradually comes to a halt.
But even as it slows down, it keeps time. It doesn’t climb as far, but it covers the shorter distance more slowly—so it actually takes exactly the same time to swing. This handy ability (technically called isochronism, which just means “equal amounts of time”) is what makes a pendulum so useful for timekeeping.
😳Why❓❓❓
Why water is sprinkled around the plate before taking food in Hindu tradition !
Scientifically It has been done to keep insects away from food while eating. Because in olden days, people use to eat in leafs and by sitting on the ground.
💁🏻♂️ GK TODAY
(i) An International Youth Day (IYD) observed on 12 Aug
(ii) The classical dance forms recognised by the Sangeet Natak Akademi and the Ministry of Culture are:
Bharatanatyam, from Tamil Nadu.
Kathak, from Uttar Pradesh.
Kathakali, from Kerala.
Kuchipudi , from Andhra Pradesh.
Odissi, from Odisha.
Sattriya, from Assam.
Manipuri, from Manipur.
Mohiniyattam, from Kerala.
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BORN TODAY
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Vikram Sarabhai
( 12-Aug-1919 — 30-Dec-1971) Indian scientist & physicist. develop nuclear power in India. He was honoured with Padma Bhushan in 1966 and the Padma Vibhushan in 1972. He is internationally regarded as the Father of the Indian Space Program.
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Ch Narmada Naveen Kumar |
