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Subject: Science and Technology

  • [pib] TiHAN: India’s first Testbed for Autonomous Navigation Systems

    Union Minister of Education laid the foundation stone of ‘TiHAN-IIT Hyderabad’, India’s first Testbed for Autonomous Navigation Systems (Terrestrial and Aerial).

    Must read:

    https://www.civilsdaily.com/news/regulations-for-flying-of-drones/

    TiHAN

    • TiHAN is an acronym for Technology Innovation Hub on Autonomous Navigation and Data Acquisition Systems (UAVs, RoVs, etc.).
    • It is a multi-departmental initiative, including researchers from Electrical, Computer Science, Mechanical and Aerospace, Civil, Mathematics, and Design at IIT Hyderabad.
    • It would focus on addressing various challenges hindering the real-time adoption of unmanned autonomous vehicles for both terrestrial and aerial applications.

    Why need TiHAN?

    • One major requirement to make unmanned and connected vehicles more acceptable to the consumer society is to demonstrate its performance in real-life scenarios.
    • However, it may become dangerous. Especially in terms of safety, to directly use the operational roadway facilities as experimental test tracks for unmanned and connected vehicles.
    • In general, both UAV and UGV testing may include crashes and collisions with obstacles, resulting in damage to costly sensors and other components.
    • Hence, it is important to test new technologies developed in a safe, controlled environment before deployment.

  • Exploiting 5G strategically

    The article examines the threat posed by the Chinese 5G technology to the world and India.

    Implications of Chinese 5G technology for Nepal

    • The launch of 5G in Nepal would mean that Nepal’s business interests could pass into Chinese control.
    • Real-time information on weather, routes, map, etc could be based on Chinese 5G, thus making locals or visitors to Nepal dependent on it.
    • A related development of infrastructure along the borders, where most mountaineering sites are, could make Nepal’s borders vulnerable and damage its tourism industry.
    • With lower incomes, the tourism industry might get lured into Chinese cheap loans, leading to a strategic debt trap.
    • Such development would have several ramifications for India.

    Implications of Chinese 5G technology for the world

    • 2020 has been no ordinary year —Militaries have been pushed to the borders, treaties, and agreements are being signed, and a record number of military deals have happened.
    • This year has witnessed the most unprecedented intensification of global military conflicts since the Gulf War.
    • AI applications have been at display in warfare, with drone killing machines being advertised.
    • There is no option left but to get the 5G technology now.
    • Huge Chinese investments across the world to spread a 5G network will encompass the planet — a “digital encirclement of the world”.
    • Combined with the BRI (Belt and Road Initiative), this encirclement would be complete.
    • Intrinsic to the BRI is the fact that Chinese companies will build digital infrastructure.
    • Militaries who allow Chinese 5G, could then become hostage to Chinese technology, as seen during the pandemic.

    Indian 5G technology: Advantages and challenges ahead

    •  India is likely to survive the Chinese 5G invasion if it accelerates the launch of the Indian 5G.
    • India is working on technologies that would enable it to launch Indigenous 5G that would run IoT platforms for civilians as well as military applications.
    • The banning of Chinese apps and blocking of hardware supply chains would be the correct counteroffensive to protect the business and security interests of the country.
    • The problem is India being poor in “implementation”.
    • Where India starts losing out is in slow adoption, getting entangled in policy processes and the crosshairs of the bureaucracy. 

    Consider the question “What are the concerns with the adoption of Chinese 5G technology? How indigenous 5G technology help India and what are the challenges in developing it?” 

    Conclusion

    India must get its timing right. The implementation of 5G, though a bit delayed, can make India a good alternative to China. But agreements like RCEP and China’s other debt strategies will remain a larger threat to the world.

  • Proxima Centauri: the closest star to the Sun

    Astronomers running the world’s largest initiative to look for alien life have recently picked up an “intriguing” radio wave emission from the direction of Proxima Centauri, the closest star to our Sun.

    Proxima Centauri

    • Proxima Centauri is 4.2 light-years away from the Sun – considered a close distance in cosmic terms.
    • Its mass is about an eighth of the Sun’s, and it is too dim to be seen with the naked eye from Earth.
    • Proxima b, one of the two planets that revolve around the star, is the subject of significant curiosity.
    • Sized 1.2 times larger than Earth, and orbits its star every 11 days, Proxima b lies in Proxima Centauri’s “Goldilocks zone”.

    Goldilocks zone is the area around a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets. To give an example, the Earth is in the Sun’s Goldilocks zone.

    The mystery of radio signals

    • Astronomers at the Breakthrough Listen project, started by the legendary physicist Stephen Hawking, regularly spot blasts of radio waves using two powerful telescopes.
    • They are Parkes Observatory in Australia or the Green Bank Observatory in the US.
    • All of their findings so far, though, have been attributed either to natural sources or interference caused by humans.
    • This raises the possibility that the emission could be an alien “techno-signature”, meaning something which provides evidence of alien technology.
    • There are also reasons to believe that the signal might not mean ‘aliens’.
    • Another possibility could be that the signal could have been caused by something behind Proxima Centauri or by a natural phenomenon whose existence we so far do not know of.

  • Foreign architects of Indian cities

    A controversy has been playing out over the last several days over a decision by the IIM Ahmedabad to bring down 18 dormitories built by legendary American architect Louis Kahn on the old campus.

    This newscard is full of facts. But one must note the features of present-day Indian Architecture and the western influence on it.

    Kahn, in fact, is one among several foreign architects whose work defines several Indian cities. Take a glimpse of all important architects and their works:

    Antonin Raymond & George Nakashima

    • Golconde, one of India’s first modernist buildings, was conceptualized in Puducherry by the founders of the experimental township of Auroville.
    • Tokyo-based Czech architect Antonin Raymond was invited to design this space as a universal commune, and Japanese-American woodworker George Nakashima would complete it after Raymond left India.
    • It is possibly India’s first reinforced concrete buildings, built between 1937 and 1945.
    • Its façade creates the impression that one could open or shut these concrete blinds, without compromising on privacy, while the ascetic interiors helped provide a meditative atmosphere.

    Otto Koenigsberger

    • Berlin-bred Koenigsberger was already working for the Maharaja of Mysore in the late 1930s when he was commissioned by Tata & Sons to develop the industrial township of Jamshedpur in the early 1940s.
    • He would later design the masterplan for Bhubhaneswar (1948) and Faridabad (1949).
    • Having seen children and women walk large distances to reach schools and workplaces, he planned for schools and bazaars in the city center and for a network of neighborhoods.
    • His friends Albert Mayer and Mathew Nowicki would go on to design Chandigarh.
    • However, much before Koenigsberger, there was the Scottish biologist and geographer Patrick Geddes, who wrote town planning reports, from 1915 to 1919, for 18 Indian cities, including Bombay and Indore.

    Frank Lloyd Wright

    • Though the legendary American architect never built a structure in India, his influence was unmistakable.
    • Two of his students, Gautam and Gira Sarabhai, founders of the National Institute of Design, Ahmedabad, requested him to design the administration building for Sarabhai Calico Mills in 1946.
    • It would possibly have been the city’s first high-rise with terraces and a podium.
    • Padma Vibhushan Charles Correa, one of India’s finest architects and urban planners, was hugely influenced by Wright.

    Le Corbusier

    • Before Swiss-French painter-writer-architect Corbusier came on the scene in Chandigarh, there was Polish architect Mathew Nowicki, an admirer of Frank Lloyd Wright and American developer Albert Mayer.
    • Nowicki’s death in a plane crash ended the commission, and Corbusier came on board.
    • With English architect Maxwell Fry and his wife Jane Drew, Corbusier with his cousin Pierre Jeanneret would design many of Chandigarh’s civic buildings, from courts to housing.
    • Corbusier’s modernist approach, without decoration, gave India its brutalist, bare concrete buildings.
    • He won favour with the Sarabhai’s of Ahmedabad and built the Sarabhai House, Shodhan House, Mill Owner’s Association Building and Sankar Kendra. He is often called the “father of modern Indian architecture”.

    Joseph Allen Stein

    • He was invited by Vijayalakshmi Pandit in 1952 to come to India and establish the Department of Architecture and Planning at the West Bengal Engineering College.
    • Though he also practiced briefly in Orissa and West Bengal, it’s in New Delhi where Stein left the deepest imprint.
    • From the Triveni Kala Sangam, the High Commissioner’s Residence and Chancery for Australia, where his polygon-shaped masonry with local stone made its first appearance to ‘Steinabad’.

    Louis Kahn

    • The importance of being Kahn is never more real than now, as the American architect’s only project in India faces bulldozers.
    • The design for IIM Ahmedabad (1962-1974) carried the essence of learning in the humility of its material, and the way spaces were managed.

  • IISER scientists identify the gene that greens plants

    Researchers at the Indian Institute of Science Education and Research (IISER) have identified a gene that facilitates in the greening of plants.

    It would be no surprise to expect a core Biology question in the coming years, if we look at this PYQ:

    Q. Which of the following statements are correct regarding the general difference between plant cells and animal cells? (CSP 2020)

    1. Plant cells have cellulose cell walls whilst animal cells do not.
    2. Plant cells do not have plasma membrane unlike animals cells which do
    3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles

    Select the correct answer using the given code below-

    (a) 1 and 2 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

    BBX11

    • The synthesis of chlorophyll in plants is a lengthy, multi-step process.
    • When a seedling emerges from under the soil it must quickly synthesize chlorophyll to start supporting its own growth.
    • In order to facilitate the quick synthesis of chlorophyll, plants make a precursor of chlorophyll called ‘protochlorophyllide’ in the dark, which glows red when blue light is shone on the plant.
    • As soon as the plant comes out into the light from under the soil, light-dependent enzymes convert protochlorophyllide to chlorophyll.
    • The two proteins oppositely regulate the ‘BBX11’ gene to maintain optimum levels of ‘BBX11’.

    How does it work?

    • It plays a crucial role in regulating the levels of protochlorophyllide — an intermediate in the biosynthesis of the green pigment chlorophyll.
    • The amount of protochlorophyllide synthesized needed to be proportional to the number of enzymes available to convert them to chlorophyll.
    • If there is an excess of free protochlorophyllide, then exposure to light converts it into molecules that cause ‘photobleaching’.
    • Thus, it is very important to regulate the amount of protochlorophyllide synthesized by the plant and here comes the vital plant played by the ‘BBX11’ gene.
    • If it is less, plants are unable to efficiently ‘green’ in order to harvest sunlight.

    Benefits of the research

    • The study could have tremendous implications in the agriculture sector in tropical countries like India and can help provide leads to optimize plant growth under stressful and rapidly changing climatic conditions.
    • Due to the rapidly changing climatic conditions, farmers in several states in India, especially in Maharashtra, are suffering huge losses in crop yields.
    • This often leads to severe distress among the farming community as indicated by the high number of farmer suicides in Maharashtra for the past several years.
    • Severe drought, high temperature and high light are some of the major reasons for crop failure. Young seedlings emerging out of the soil are extremely sensitive to high irradiance of light.
    • This study can provide leads to optimize plant growth under these stressful conditions.

  • How dangerous is Ammonia?

    Two persons died and several took ill in a major ammonia gas leakage at a fertilizers unit at Prayagraj.

    Try this PYQ:

    Q. With reference to chemical fertilizers in India, consider the following statements:

    1. At present, the retail price of chemical fertilizers is market-driven and not administered by the Government.
    2. Ammonia, which is an input of urea, is produced from natural gas.
    3. Sulphur, which is a raw material for phosphoric acid fertilizer, is a by-product of all oil refineries.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 and 3 only

    (c) 2 only

    (d) 1,2 and 3

    Ammonia

    • Ammonia is critical in the manufacturing of fertilizers and is one of the largest-volume synthetic chemicals produced in the world.
    • More than 80 per cent of ammonia made is consumed in the manufacturing of fertilizer, and most of the remainder goes into the production of formaldehyde.
    • A tri-hydroid of nitrogen (NH3), ammonia is a building block for ammonium nitrate (NH4NO3) that is used in agriculture as a high-nitrogen fertilizer.

    Why is it harmful?

    • According to experts in Chemistry, ammonia is stored for industrial use in liquid form under high pressure or in gaseous form at low temperature.
    • In such cases, the cause of death is always suffocation as in the case of Prayagraj incident, the victims must have been very close to the point of a gas leak.

    Effects on the human body

    • Ammonia, even in moderate concentration, can cause irritation to eyes, skin, nose and throat.
    • It interacts immediately upon contact with moisture present in the skin, eyes, oral cavity, and respiratory tract to form ammonium hydroxide.
    • It is very caustic and disrupts the cell membrane lipids, ultimately leading to cellular destruction.
    • As cell proteins break down, water is extracted, resulting in an inflammatory response that causes further damage.

    Secretion in humans

    • Ammonia, which is highly soluble in water, is found in soil, air, and water; it is naturally present in the body.
    • It is secreted by the kidneys to neutralize excess acid.
    • However, it is highly diluted when in the environment and does not affect the human body to a noticeable level.

  • What are Fastags?

    From January 1, all lanes of National Highways will accept only electronic payments through FASTag.

    Fastags work on a unique technology called RFID (Radio Frequency Identification). This has gone unnoticed in several competitive exams. Hence it is still relevant for the aspirants.

    Also read

    Fastags

    • As per Central Motor Vehicles Rules, 1989, since 1st December 2017, the FASTag had been made mandatory for all registered new four-wheelers and is being supplied by the Vehicle Manufacturer or their dealers.
    • It has been mandated that the renewal of fitness certificate will be done only after the fitment of FASTag.
    • For National Permit Vehicles, the fitment of FASTag was mandated since 1st October 2019.

    What is ‘FASTag’?

    • FASTags are stickers that are affixed to the windscreen of vehicles and use Radio Frequency Identification (RFID) technology to enable digital, contactless payment of tolls without having to stop at toll gates.
    • The tags are linked to bank accounts and other payment methods.
    • As a car crosses a toll plaza, the amount is automatically deducted, and a notification is sent to the registered mobile phone number.

    How does it work?

    • The device employs Radio Frequency Identification (RFID) technology for payments directly from the prepaid or savings account linked to it.
    • It is affixed on the windscreen, so the vehicle can drive through plazas without stopping.
    • RFID technology is similar to that used in transport access-control systems, like Metro smart card.
    • If the tag is linked to a prepaid account like a wallet or a debit/credit card, then owners need to recharge/top up the tag.
    • If it is linked to a savings account, then money will get deducted automatically after the balance goes below a pre-defined threshold.
    • Once a vehicle crosses the toll, the owner will get an SMS alert on the deduction. In that, it is like a prepaid e-wallet.

  • TN govt gives nod for Jallikattu

    The Tamil Nadu government has permitted Jallikattu to be held across the state during the upcoming Pongal season.

    51A (g) of the Constitution of India mandates every citizen to protect forests, lakes, rivers, wild animals etc. Apart from that, the Constitution also reminds us to show compassion towards birds and animals.

    What is Jallikattu?

    • It is a bull-taming sport and a disputed traditional event in which a bull such is released into a crowd of people.
    • Multiple human participants attempt to grab the large hump on the bull’s back with both arms and hang on to it while the bull attempts to escape.
    • Participants hold the hump for as long as possible, attempting to bring the bull to a stop. In some cases, participants must ride long enough to remove flags on the bull’s horns.
    • It is typically practised in the state of Tamil Nadu as a part of Pongal (harvest) celebrations in January.

    A historic sport

    • Jallikattu has been known to be practised during the Tamil classical period (400-100 BCE).
    • It was common among the Ayar people who lived in the ‘Mullai (pastoral)’ division of the ancient Tamil country.
    • Later, it became a platform for the display of bravery, and prize money was introduced for participation encouragement.
    • A seal from the Indus Valley Civilization depicting the practise is preserved in the National Museum, New Delhi.

    Why it is disputed?

    • As there were incidents of injury and death associated with the sport, both to the participants and to the animals forced into it, animal rights organizations have called for a ban to the sport.
    • This has resulted in the court banning it several times over the past years.
    • However, with protest from the people against the ban, a new ordinance was made in 2017 to continue the sport.

    Various concerns

    • The event has caused several human deaths and injuries and there are several instances of fatalities to the bulls.
    • Animal welfare concerns are related to the handling of the bulls before they are released and also during the competitor’s attempts to subdue the bull.
    • Practices, before the bull is released, include prodding the bull with sharp sticks or scythes, extreme bending of the tail which can fracture the vertebrae, and biting of the bull’s tail.
    • There are also reports of the bulls being forced to drink alcohol to disorient them, or chilli peppers being rubbed in their eyes to aggravate the bull.
    • During attempts to subdue the bull, they are stabbed by various implements such as knives or sticks, punched, jumped on and dragged to the ground.

    Why activists seek a ban over it?

    • Animal rights activists argue that Jallikattu exploits the bull’s natural nervousness as prey animals by deliberately placing them in a terrifying situation.
    • They are forced to run away from the competitors whom they perceive as predators and the practice effectively involves catching a terrified animal.
    • Along with human injuries and fatalities, bulls themselves sometimes sustain injuries or die, which people may interpret as a bad omen for the village.
    • An investigation by the Animal Welfare Board of India concluded that “Jallikattu is inherently cruel to animals”.

    Arguments in favour of the sport

    • According to its protagonists, it is not a leisure sport available but a way to promote and preserve the native livestock.
    • Some believe that the sport also symbolizes a cordial man-animal relationship.

  • Why the universe has less ‘antimatter’ than matter?

    This newscard is an excerpt from the original article published in DownToEarth.

    Try this PYQ:

    Q.The known forces of nature can be divided into four classes, viz, gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct?

    (a) Gravity is the strongest of the four

    (b) Electromagnetism act only on particles with an electric charge

    (c) Weak nuclear force causes radioactivity

    (d) Strong nuclear force holds protons and neutrons inside the nuclear of an atom.

    What is Antimatter?

    • Antimatter is the opposite of normal matter. More specifically, the sub-atomic particles of antimatter have properties opposite those of normal matter.
    • The electrical charge of those particles is reversed.
    • Antimatter was created along with matter after the Big Bang, but antimatter is rare in today’s universe.
    • To better understand antimatter, one needs to know more about the matter.
    • The matter is made up of atoms, which are the basic units of chemical elements such as hydrogen, helium or oxygen.

    Their existence

    • The existence of antimatter was predicted by physicist Paul Dirac’s equation describing the motion of electrons in 1928.
    • At first, it was not clear if this was just a mathematical quirk or a description of a real particle.
    • But in 1932 Carl Anderson discovered an antimatter partner to the electron — the positron — while studying cosmic rays that rain down on Earth from space.
    • Over the next few decades’ physicists found that all matter particles have antimatter partners.
    • Scientists believe that in the very hot and dense state shortly after the Big Bang, there must have been processes that gave preference to matter over antimatter.
    • This created a small surplus of matter, and as the universe cooled, all the antimatter was destroyed, or annihilated, by an equal amount of matter, leaving a tiny surplus of matter.
    • And it is this surplus that makes up everything we see in the universe today.

    Studying the difference between matter and antimatter

    • A Quark is a type of elementary particle and a fundamental constituent of matter.
    • Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei.
    • The behaviour of quarks, which are the fundamental building blocks of matter along with leptons, can shed light on the difference between matter and antimatter.
    • Since they are unstable, they will “decay” — fall apart — into other more stable particles at some point during their oscillation.

  • Festivals in news: Chillai Kalan

    People in the Kashmir valley are finding unique ways to celebrate the start of ‘Chillai Kalan’, a local term for the 40-day period of harshest winter that begins annually from December 21.

    Tap here to read all about:

    Festivals, Dances, Theatre, Literature, Art in News

    Chillai Kalan

    • Chillai Kalan is the coldest 40-day period of harsh winter of winter in the Jammu and Kashmir region.
    • It is traditionally defined as a seasonal period of harsh winter accompanied by a change in increase in both frequency and quantity of precipitation usually snow.
    • It begins from December 21 and ends on January 31 next year.
    • It is followed by a 20-day long Chillai-Khurd (small cold) that occurs between January 31 and February 19 and a 10-day long Chillai-Bachha (baby cold).
    • According to Persian tradition, the night of 21st December is celebrated as Shab-e Yalda-“Night of Birth”, or Shab-e Chelleh “Night of Forty”.

    Its’ celebration

    • In the Persian tradition, the night of December 21, the longest of the year, is celebrated as Shab-e-Yalda (night of birth) or Shab-e-Chelleh.
    • Dozens of netizens from Kashmir named it the ‘Pheran Day’, after the long woollen gown worn during the winters in Kashmir.
    • Use of a traditional firing pot called Kangri increases.
    • Tap water pipelines partially freeze during this period. The Dal Lake also freezes.
    • The famous tourist resort of Gulmarg receives heavy snow which attracts skier’s from every part of the world.