Note4Students
From UPSC perspective, the following things are important :
Prelims level: State of Rampur
Mains level: Post independence consolidation and reorganization
Erstwhile royals of the state of Rampur in Uttar Pradesh are fighting over the assets and legacy of Nawab Raza Ali Khan, who acceded to the Indian Union at the time of Independence. The Supreme Court ended India’s longest-running civil dispute last year, and the process of evaluating the inheritance is currently ongoing.
The state of Rampur
- The state of Rampur was founded by Nawab Ali Muhammad Khan, the adopted son of Sardar Daud Khan, the chief of the Rohillas in Northern India.
- The Rohillas were Afghans who entered India in the 18th century as the Mughal Empire was in decline, and took control of Rohilkhand, at the time known as Katehr.
- In 1737, Nawab Muhammad Khan received the territory of Katehr from Emperor Muhammad Shah, only to lose everything to Nawab Wazir of Oudh in 1746.
- Two years later, he assisted Ahmad Shah Durrani in his conquest of India, recovering all his former possessions.
- Over the next two centuries the Rampur royals, earlier a warring clan, struck deep roots, and with the blessings of the British, began to build one of the richest principalities in the country.
Patrons of the arts, culture
- The Rampur royals have played an important role in the socio-cultural history of the Ganga-Yamuna belt.
- They run the Amir Raza library in Rampur, once known as the official darbar of the Nawab, which is home to some 15,000 manuscripts in Arabic, Urdu, Persian and Turkish, as well as a seventh-century Quran.
- The library also houses 2,500 specimens of Islamic calligraphy, 5,000 miniature paintings, and 60,000 printed books, besides the extremely rare Persian translation of Valmiki’s Ramayana, which is believed to have been Emperor Aurangzeb’s personal copy.
- In the 19th century, the royals established courts of law and a standing army, and built irrigation works. In the 20th century, they set up sugar and textile mills.
- Many Hindus were employed in senior administrative positions in the state. Nawab Raza Ali Khan was known to have written poetry in Bhojpuri for Holi.
- The Rampur court was also a great patron of the arts, and is known to have patronised Ghalib and Begum Akhtar, as well as the tabla player Ahmad Jan Thirakwa, sarangi player Bundu Khan, sarod player Fida Hussein Khan, been player Wazir Khan, and the kathak dancers Acchan Maharaj and Kalka Prasad.
After Independence
- Rampur, under Nawab Raza Ali, was the first kingdom to accede to India in 1949, becoming the only Muslim-majority district in Uttar Pradesh.
- Soon after accession, the Nawab handed over the official royal residence, the Rampur Qila or Fort, built in 1775, to the Indian government, along with several other properties.
- In return, the Indian government bestowed two key rights to the Nawab — he was granted full ownership of the properties, and guaranteed succession to the gaddi or rulership of the state based on customary law, which gave exclusive property rights to the eldest son.
- When Raza Ali Khan died in 1966, he had three wives, three sons, and six daughters.
- His eldest son Murtaza Ali Khan succeeded him as head of the state, as per custom.
- The government recognised him as the sole inheritor of all his father’s private properties and issued a certificate to this effect. But his brother challenged this in the civil court.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Dara Shikoh and his legacy
Mains level: Secular trends in Mughal Administration
The Ministry of Culture recently set up a panel of the Archaeological Survey of India (ASI) to locate the grave of the Mughal prince Dara Shikoh (1615-59) nearby Humayun’s Tomb complex in Delhi.
Dara Shikoh’s legacy
- The eldest son of Shah Jahan, Dara Shikoh was killed after losing the war of succession against his brother Aurangzeb.
- Dara Shikoh is described as a “liberal Muslim” who tried to find commonalities between Hindu and Islamic traditions.
- He translated into Persian the Bhagavad Gita as well as 52 Upanishads.
Antithesis to Aurangzeb
- Some historians argue that if Dara Shikoh had ascended the Mughal throne instead of Aurangzeb, it could have saved thousands of lives lost in religious clashes.
- Dara Shukoh was the total antithesis of Aurangzeb, in that he was deeply syncretic, warm-hearted and generous — but at the same time, he was also an indifferent administrator and ineffectual in the field of battle.
The remains of Dara Shikoh
- According to the Shahjahannama, after Aurangzeb defeated Dara Shikoh, he brought the latter to Delhi in chains.
- His head was cut off and sent to Agra Fort, while his torso was buried in the Humayun’s Tomb complex.
- Italian traveller Niccolao Manucci gave a graphic description of the day in Travels of Manucci, as he was there as a witness to the whole thing. That is the basis of the thesis.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Supergiant star ‘Betelgeuse’
Mains level: Big Bang Theory
Using the European Space Organization’s (ESO) Very Large Telescope (VLT), astronomers have noticed the unprecedented dimming of Betelgeuse.
Betelgeuse
- It is a red supergiant star (over 20 times bigger than the Sun) in the constellation Orion.
- Along with the dimming, the star’s shape has been changing as well, as per recent photographs of the star taken using the VISIR instrument on the VLT.
- Instead of appearing round, the star now appears to be “squashed into an ova”.
Why is it significant?
- Betelgeuse was born as a supermassive star millions of years ago and has been “dramatically” and “mysteriously” dimming for the last six months.
- While Betelgeuse’s behaviour is out of the ordinary, it doesn’t mean that an eruption is imminent since astronomers predict the star to blast sometime (supernova explosion, which is the largest explosion to take place in space) in the next 100,000 years or so.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Various missions mentioned in the newscard
Mains level: Discovery Program investigations
NASA announced it has selected four Discovery Program investigations to develop concept studies for possible new missions.
What are the new missions?
- Two proposals are for trips to Venus, and one each is for Jupiter’s moon Io and Neptune’s moon Triton.
- After the concept studies are completed in nine months, some missions ultimately may not be chosen to move forward.
DAVINCI+
- DAVINCI+ stands for Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging Plus.
- This will analyse Venus’s atmosphere to understand how it was formed and evolved, and if it ever had an ocean.
- This will advance understanding of the formation of terrestrial planets.
IVO
- Io Volcano Observer is a proposal to explore Jupiter’s moon Io, which is extremely volcanically active.
- This will try to find out how tidal forces shape planetary bodies.
- The findings could further knowledge about the formation and evolution of rocky, terrestrial bodies and icy ocean worlds in the Solar System.
TRIDENT
This aims to explore Neptune’s icy moon, Triton, so that scientists can understand the development of habitable worlds in the Solar System.
VERITAS
Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy will aim to map Venus’s surface to find out why Venus developed so differently from Earth.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Indian Pangolins
Mains level: Wildlife trade and its prevention
The Madhya Pradesh forest department has radio-tagged an Indian Pangolin (Manis crassicaudata) for the first time.
Pangolins
IUCN status: Endangered
- India is home to two species of pangolin.
- While the Chinese Pangolin (Manis pentadactyla) is found in northeastern India, the Indian Pangolin is distributed in other parts of the country as well as Sri Lanka, Bangladesh and Pakistan.
- Both these species are protected and are listed under the Schedule I Part I of the Wild Life (Protection) Act, 1972 and under Appendix I of the Convention on International Trade in Endangered Species (CITES).
- Commonly known as ‘scaly anteaters’, the toothless animals are unique, a result of millions of years of evolution.
- Pangolins evolved scales as a means of protection. When threatened by big carnivores like lions or tigers they usually curl into a ball.
- The scales defend them against dental attacks from the predators.
Why this radio-tagging?
- The radio-tagging aims to know its ecology and develop an effective conservation plan for it.
- The radio-tagging is part of a joint project by the department and non-profit, the Wildlife Conservation Trust (WCT) that also involves the species’ monitoring apart from other activities.
Why protect Pangolins?
- Pangolins are currently the most trafficked wildlife species in the world.
- These Scales has now become the main cause of the pangolin’s disappearance.
- The scales are in high demand in China, where they are used in traditional Chinese medicine.
- Pangolin meat is also in high demand in China and Southeast Asia.
- Consequently, pangolins have seen a rapid reduction in population globally. The projected population declines range from 50 per cent to 80 per cent across the genus.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Pale Blue Dot
Mains level: Voyager 1 mission
The Jet Propulsion Laboratory of the NASA published a new version of the image of Pale Blue Dot.
Pale Blue Dot
- The ‘Pale Blue Dot’ is one of the most iconic images in the history of astronomy.
- It shows Earth as a single bright blue pixel in empty space within a strand of sun rays, some of which are scattering from and enlightening the planet.
- The original image was taken by the Voyager 1 mission spacecraft on February 14, 1990 when it was just beyond Saturn.
- At the behest of astronomer Carl Sagan, the cameras were turned towards Earth one final time to capture the image.
- After this, the cameras and other instruments on the craft were turned off to ensure its longevity.
About Voyager 1
- Voyager 1 is a space probe launched by NASA on September 5, 1977.
- Having operated for more than 42 years, the spacecraft still communicates with the Deep Space Network to receive routine commands and to transmit data to Earth.
- At a distance of 148.67 AU (22.2 billion km) from Earth as of January 19, 2020 it is the most distant man-made object from Earth.
- The probe’s objectives included flybys of Jupiter, Saturn, and Saturn’s largest moon, Titan.
The Family Portrait of the Solar System
- The Pale blue dot image was a part of series of 60 images designed to produce what the mission called the ‘Family Portrait of the Solar System’.
- This sequence of camera-pointing commands returned images of six of the solar system’s planets, as well as the Sun.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Yaravirus
Mains level: NA
In a lake in Brazil, researchers have discovered a virus that they find unusual and intriguing.
Yaravirus
- The Yaravirus infects amoeba and has genes that have not been described before, something that could challenge how DNA viruses are classified.
- It has a puzzling origin and phylogeny (evolutionary relationship).
- Because of the Yaravirus’s small size, it was unlike other viruses that infect amoeba and they named it as a tribute to Yara, the “mother of waters” in the mythological stories of the Tupi-Guarani indigenous tribes.
- The virus does not infect human cells, according to the researchers.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: SuperCam
Mains level: Study of life on Mars
In its mission to Mars this summer, NASA is sending a new laser-toting robot called SuperCam as one of seven instruments aboard the Mars 2020 rover.
SuperCam
- Called SuperCam, the robot is used for studying mineralogy and chemistry from up to about 7 metres away.
- It might help scientists find signs of fossilized microbial life on Mars.
- SuperCam packs what would typically require several sizable pieces of equipment into something no bigger than a cereal box.
- It fires a pulsed laser beam out of the rover’s mast to vaporise small portions of rock from a distance, providing information that will be essential to the mission’s success.
NASA lists five things to know
- From more than 7 m away, SuperCam can fire a laser to study rock targets smaller than a pencil point. That lets the rover study spots it can’t reach with its arm.
- SuperCam looks at rock textures and chemicals to find those that formed or changed in water on Mars long ago.
- SuperCam looks at different rock and “soil” types to find ones that could preserve signs of past microbial life on Mars — if any ever existed.
- For the benefit of future explorers, SuperCam identifies which elements in the Martian dust may be harmful to humans.
- Scientists can learn about how atmospheric molecules, water ice, and dust absorb or reflect solar radiation. This helps predict Martian weather better.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: PSAZ
Mains level: PSAZ and its benefits
The Cauvery delta region in Tamil Nadu will be declared as ‘Protected Special Agricultural Zone’ (PSAZ) by the TN govt.
Cauvery delta PSAZ
- Declaring PSAZ ensures that particular region will not be granted permission for any new projects like those related to hydrocarbons.
- Only Agro based Industries would be given permission to be built.
- The special protection will be bestowed on Cauvery Delta districts such as Thanjavur, Tiruvarur, Nagappattinam, Pudukottai, Cuddalore, Ariyalur, Karur and Tiruchirappalli districts.
Significance of the move
- The Cauvery Delta Region is Tamil Nadu’s rice bowl comprising above eight districts.
- It is just and reasonable that projects like hydrocarbon exploration have raised concerns among farmers and other agriculture-based labourers.
- Drilling for extraction of oil and gas in these regions that hampers agriculture and posing much environmental impact or health hazards will be stopped immediately.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Data on Indian's living abroad
Mains level: Indian diaspora in Gulf region
There are over 1.36 crore Indian nationals living abroad, according to data tabled by the Ministry of External Affairs in Lok Sabha.
Indians abroad
- The highest number of Indians abroad are living in the United Arab Emirates, where the 34,20,000 Indians comprise about one-fourth of all Indians abroad.
- The UAE is followed by Saudi Arabia (25,94,947), the US (12,80,000), Kuwait (10,29,861), Oman (7,79,351), Qatar (7,56,062), Nepal (5,00,000), UK (3,51,000), Singapore (3,50,000) and Bahrain (3,23,292).
- The CPV (Consular, Passport and Visa) division of the ministry is the nodal division that coordinates with all missions / posts abroad regarding transportation of the mortal remains of Indians from abroad to their hometowns in India.
Total remittances recieved
- Citing RBI data, the ministry said that during 2018-2019, $76.4 billion was received as remittances from Indians abroad.
- During 2019-2020 (April-September), $41.9 billion was received.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Muktoshri
Mains level: Arsenic poisoning through food, Rice Fortification
Researchers have developed and commercialized a rice variety that is resistant to arsenic.
Muktoshri
- The new rice variety, Muktoshri — also called IET 21845 —, was developed jointly by the Rice Research Station at Chinsurah coming under West Bengal’s Agriculture Department and the National Botanical Research Institute, Lucknow.
- A gazette notification for the commercial use of Muktoshri was made by West Bengal last year.
- During our multilocational trials, it was found that this variety uptakes very less amount of arsenic from soil and water in comparison to other varieties of rice.
- The rice is long and thin, and aromatic. Across the State, thousands of farmers have started cultivation, even in areas where arsenic in groundwater is not an issue, because of the aroma and the yield.
Significance
- West Bengal is among the States with the highest concentration of arsenic in groundwater, with as many as 83 blocks across seven districts having higher arsenic levels than permissible limits.
- Several studies have shown that arsenic from groundwater and the soil can enter the food chain through paddy.
- According to the WHO, long-term exposure to arsenic, mainly through drinking water and food, can lead to poisoning. Skin lesions and skin cancer are the most characteristic effects.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Fermentophone
Mains level: NA
Fermentation, the chemical breakdown of a substance by microorganisms such as bacteria or yeasts, results in some of the most delicious foods and beverages, including cheese, chocolate and wine. Now, research has shown it can result in music, too.
Fermentophone
- The chemical processes of fermentation can be used to create spontaneous tunes.
- Researchers has built multiple art exhibits called Fermentophone to showcase how fermentation can make music.
- First, different fruits and veggies are placed in glass jars and fermented.
- As the fermentation kicks off, the yeast — or bacteria — present in the food chows down on the foods’ sugars, which results in the release of carbon dioxide bubbles.
- The release of these bubbles creates a tiny sound, which is picked up by underwater microphones.
- A computer processes the sounds and, with the help of algorithms plugged in, electronic music is created.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Agartala-Akhaura Link
Mains level: Railway connectivity in NE states
The landmark Agartala-Akhaura railway line to connect the northeastern region with Bangladesh is expected to be ready by the end of 2021.
About Agartala-Akhaura Link
- MoU for Indo-Bangla Railway connectivity project viz. Agartala-Akhaura new Broad Gauge line (15.06 Km) was signed on 16.02.2013 between India and Bangladesh.
- The link will connect Gangasagar in Bangladesh to Nischintapur in India and from there to Agartala.
- The Project was at standstill because of the sharp increase in the cost of land for the sections in India.
- The Railway Ministry would bear the cost of laying the 5.46-km track on the Indian side and the cost of the 10.6-km track on the Bangladesh side was being borne by the Ministry of External Affairs.
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From UPSC perspective, the following things are important :
Prelims level: Sharang
Mains level: Modernisation measures of the Indian Army
The Ordnance Factory Board (OFB) has handed over Sharang, the first 130mm M-46 artillery gun upgraded to 155mm to the Indian Army.
About Sharang
- Sharang is the 130mm artillery gun ‘up-gunned’ to 155mm, 45 calibre up-gunning based on the Army’s tender.
- The gun’s range has now gone from 27km to over 36km with the upgrade.
- It also has more explosive capability and hence and more damage potential.
- This step will reduce the logistic trail of the Army as it does away with the need to carry 130mm shells and support equipment as the mainstay of the Army’s long range artillery is 155mm guns.
Other artilleries of Indian Army
- After close to three decades, the Army inducted its first modern artillery guns system in November 2018.
- These include M-777 Ultra Light Howitzers (ULH) from the U.S. and K9 Vajra-T self-propelled artillery guns from South Korea.
- The Army has the older, battle-proven Bofors 155mm guns in service. The 155mm Dhanush towed gun system, developed based on the Bofors guns by OFB, is under induction.
- In October last year, the Army procured and inducted 155mm Excalibur precision guided ammunition from the U.S. which gives its 155mm artillery guns extended range and also the ability to hit targets with very high accuracy.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Euthermia
Mains level: Not Much
Euthermia refers to normal body temperature. The thermometer reading of 98.6°F has been a gold standard for a century and a half, ever since a German doctor laid it down as the “normal” body temperature. A new research has found that body temperatures have, in fact, been declining over the last two centuries.
Why we follow 98.6°F?
- In 1851, Carl Reinhold August Wunderlich pioneered the use of the clinical thermometer.
- It was a rod a foot long, which he would stick under the armpits of patients at the hospital attached with Leipzig University, and then wait for 15 minutes (some accounts say 20 minutes) for the temperature to register.
- He took over a million measurements of 25,000 patients, and published his findings in a book in 1868, in which he concluded that the average human body temperature is 98.6°F.
- Most modern scientists feel Wunderlich’s experiments were flawed, and his equipment inaccurate.
- Another study concluded that the average human body temperature is closer to 98.2°F, and suggested that the 98.6°F benchmark be discarded.
The body is cooler
- The Stanford University the researchers confirmed some known trends — body temperature is higher in younger people, in women, in larger bodies and at later times of the day.
- Additionally, they found that the bodies of men born in the early to mid-1990s is on average 1.06°F cooler than those of men born in the early 1800s.
- And the body temperature of women born in the early to mid-1990s is on average 0.58°F lower than that of women born in the 1890s.
- The calculations from the research correspond to a decrease in body temperature of 0.05°F every decade.
Why there’s decrease in body temperature?
- The researchers have proposed that the decrease in body temperature is the result of changes in the environment over the past 200 years, which have in turn driven physiological changes.
- The decrease in average body temperature in the US, they said, could be explained by a reduction in metabolic rate, or the amount of energy being used.
- The environment that we’re living in has changed, including the temperature in our homes, our contact with microorganisms and the food that we have access to.
- Actually the human body is changing physiologically.
So what’s the normal temperature?
- The strong influences of age, time of day, and genders determine the healthy body temperature.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Brahadeeswarar Temple
Mains level: Temple Architecture
- Tens of thousands of pilgrims thronged Thanjavur in Tamil Nadu’s Cauvery delta to witness the Kumbhabishegam (consecration) ceremony at the Sri Brahadeeswarar Temple.
- This enormously significant event was held after 23 years — and after the Madras High Court had settled an old argument over the ritual purification process only five days previously.
- The judgment delivered by the Madurai Bench of the court addressed the struggle for supremacy between the Sanskrit and Tamil traditions.
Sri Brahadeeswarar Temple and Kumbhabishegam ceremony
- The Sri Brahadeeswarar Temple (also spelt Brihadisvara, and called Peruvudaiyar Koyil, which translates simply to ‘Big Temple’) is the most famous of the many temples in Thanjavur.
- The temple, one of the world’s largest and grandest, was built between 1003 AD and 1010 AD by the great Chola emperor Raja Raja I (c. 985-1014 AD).
Before the High Court
- The court, in a dispute over which language should be used in the slokas at the kumbhabishegam, agreed with the state government’s affidavit that the ceremony should be in both Sanskrit and Tamil.
- The Temple committee had demanded that the Kumbhabishegam should be held only in Tamil.
- The court ruled the choice to be vested with the devotees to seek for their archanas to be performed at their wishes by chanting the manthras either in Tamil or in Sanskrit.
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From UPSC perspective, the following things are important :
Prelims level: UNU-INWEH
Mains level: Need for wastewater management
The world generates about 380 trillion litres (tl) wastewater every year. These stores vast amounts of energy, nutrients for fertilizers besides, of course, water, according to recent study by the UN Institute for Water Environment and Health (UNU-INWEH).
Energy in wastewater
- In principle, nutrients such as nitrogen, phosphorous and potassium recovered from wastewater produced annually can offset 13.4 per cent of global demand to produce fertilizers.
- Assuming full-energy recovery, the study estimated, current wastewater volume could provide enough methane fuel to power 196 million households by 2030 and 239 million households by 2050.
- Usable water reclaimed from wastewater can irrigate up to 31 million hectares (mha) of land, the study claimed.
- The volume of wastewater being generated is projected to rise roughly 24 per cent by 2030 to 470 tl and 51 per cent by 2050 to 574 tl.
- Treating wastewater efficiently can go a long way in achieving the UN-mandated sustainable development goals (SDG).
About UNU-INWEH
- UNU-INWEH acts as the “UN Think Tank on Water” and contributes to the resolution of the global water challenge through a unique programme of applied research and education.
- It conceives, develops, and manages water initiatives that help developing countries build their capacity for lasting improvements in human and ecosystem health, and overall reduction in poverty.
- The University is not a traditional university in the sense of having a faculty, campus, or students.
- They respond directly to the regional and global water crisis and facilitate efforts to meet UN Development goals by providing a scientific evidence base.
- UNU-INWEH carries out its work in cooperation with other research institutions, international organizations, individual scholars, and scientists throughout the world.
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From UPSC perspective, the following things are important :
Prelims level: PTA and its uses
Mains level: Not Much
- During her Budget speech, FM Mrs. Sitharaman said that the government was abolishing in “public interest” an anti-dumping duty that was levied on imports of a chemical called PTA.
- Domestic manufacturers of polyester have called the move a huge relief for the industry, claiming they had been fighting to remove the duty for four-and-a-half years.
What is PTA?
- Purified Terephthalic Acid (PTA) is a crucial raw material used to make various products, including polyester fabrics.
- PTA makes up for around 70-80% of a polyester product and is, therefore, important to those involved in the manufacture of man-made fabrics or their components, according to industry executives.
- This includes products like polyester staple fibre and spun yarn.
- Our cushions and sofas may have polyester staple fibre fillings. Some sportswear, swimsuits, dresses, trousers, curtains, sofa covers, jackets, car seat covers and bed sheets have a certain proportion of polyester in them.
What led to the government decision?
- There has been persistent demand that they should be allowed to source that particular product at an affordable rate, even if it means importing it.
- She had said easy availability of this “critical input” at competitive prices was desirable to unlock “immense” potential in the textile sector, seen as a “significant” employment generator.
- The duty had meant importers were paying an extra $27-$160 for every 1,000 kg of PTA that they wanted to import from countries like China, Taiwan, Malaysia, Indonesia, Iran, Korea and Thailand.
- Removing the duty will allow PTA users to source from international markets and may make it as much as $30 per 1,000 kg cheaper than now, according to industry executives.
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From UPSC perspective, the following things are important :
Prelims level: Velutheeyam
Mains level: Not Much
A tri-metal sculpture of Jesus Christ( Healing Christ) in Thiruvalla, Kerala has entered the Universal Records Forum’s (URF) book of world records.
Velutheeyam
- The statue was sculpted with an alloy of zinc, copper, and velutheeyam (an alloy of tin and aluminium).
- A URF team adjudged that the 368-cm tall statue, weighing 2,400 kg, is the largest one of its kind in the world.
- It took 18 months for sculpting the statue.
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From UPSC perspective, the following things are important :
Prelims level: Archimedes Principle
Mains level: NA
Recently, Archimedes Principle was used in Jharkhand to rescue baby elephant stuck in a well. The rescue team filled the well with water using motorized pipes, after which the struggling elephant floated to the top and was able to climb out through a ramp placed for it.
What is the ‘Archimedes Principle’?
- In physics, the Archimedes Principle refers to the law of buoyancy (the ability or tendency of something to float in water or other fluids).
- According to the principle, when an object is completely or partially submerged in a fluid, whether gas or liquid, it is acted upon by an upward force (buoyancy) equal to the weight of the fluid it has displaced.
- The force acting downward on the object is the weight of the object. The upward force is the one given by the Archimedes Principle.
- The difference between the two forces is the net force acting on the object.
- If the buoyant force is more than the weight, the object rises; if it is less, the object sinks.
- If the net force is zero, the object remains in place, and neither rises nor sinks.
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