Tag: Science

  • Mixing truth with falsehood: Justice Katju

    Mixing truth with falsehood: Justice Katju

    An Article by Justice Katju
    A few years back some elderly relatives of mine wanted to visit the Akshardhaam temple in Delhi, so I took them there.
    Among other things there, is a cultural boat-ride inside a tunnel, and we went on it. Inside this tunnel are scenes from ancient Indian history. Many of these are truthful, like Sushruta doing a surgery, Aryabhat explaining mathematics to his students, Panini teaching grammar, etc. But there was one scene which completely put me off.
    That was a scene showing an aeroplane allegedly built in ancient India.


    Afterwards, I went to the head priest of the temple, and told him that while the other scenes were truthful and should certainly be shown to people who should know about the great achievements of our ancestors, the scene of an aeroplane in ancient India was false, as there were no aeroplanes then. Showing such falsehood dilutes the great achievements of our ancestors by mixing truth with falsehood.
    Unfortunately in recent years there have been such false and fantastic claims by even high political authorities and some scientists in India who want to curry favours from them, which dilutes our real great achievements in science in the past, and makes us a laughing stock in the world. I may therefore deal with this.

    Truths

    1. One of the greatest inventions in the world was the decimal system in mathematics invented by Indians about 2500 years ago, without which scientific progress would have been extremely slow, if not impossible. I have explained this in my article below Indians were once leaders in science Aryabhatta, Brahmagupta, Varahamihir, etc made great advances in mathematics ( see on google ).
    1. Ancient Indians also made great advances in astronomy, carefully studying movements of stars and planets with naked eyes ( there were no telescopes then ). The ‘patras’ used in India on the basis of their calculations can accurately predict the times of solar and lunar eclipses even today.

    Indian Astronomy

    Astronomy in Ancient India

    1. Plastic surgery was invented by Sushrut in India 2000 years ago, while Europeans learnt it only about 200 years back. In plastic surgery, no plastic is used. In plastic surgery, a piece of one’s own body is removed and placed on another part of one’s body.

    For instance, in a heart bypass surgery (when a heart artery gets blocked), a part of a vein in one’s leg is removed and is placed in one’s own heart. We cannot put a piece of someone else’s body in our body, because our immune system will reject it.

    All this was discovered by Sushruta.

    Ancient Indian physicians such as Charak were perhaps ahead of the whole world in medicine at that time

    1. In the Harappa-Mohenjodaro (Indus Valley) civilisation, we had developed the concept of town planning (which exists only on paper in most of our cities today), an excellent drainage and sewage system (which has largely collapsed in many cities in India today), and created a surprisingly modern port (at Lothal)
    2. Ancient Indians had a profound knowledge of architecture. For instance, south Indian temples are massive and unbelievable unless one visits them, and they reveal the high level of knowledge of architecture and geometry of the ancient and medieval south Indians. The Brihadishvara temple of Tanjore is simply astounding, and one wonders how the builders could use such huge stones in building it (which reminds one of the Egyptian pyramids).

    The Konark temple of Odisha, Martand temple in Kashmir, etc also show the high level of knowledge of architecture of ancient Indians.

    The gigantic rock relief ‘Descent of the Ganges’ in the ancient port city of Mahabalipuram, capital of the Pallav Empire, is truly amazing.

    1. Scientific grammar was invented by the great grammarian Panini about 2500 years ago. Even today the Roman alphabets used in English, French, Germans etc are unscientifically arranged, all jumbled up. There is no logical reason why d is followed by e, e by f, h by i, p by q, y by z, etc.

    On the other hand, Panini in the first 14 sutras of his book Ashtadhyayi arranged vowels and consonants scientifically. Thus, the ka varga ( sequence ) i.e. ka kha ga gha nga has 5 consonants, all sounds emitted from the throat. The cha varga has sounds emitted from the middle of the tongue, the tta varga from the roof of the mouth, the ta varga from the tip of the tongue, and the pa varga from the lips.

    Panini’s grammar is used even today in computer science

    Panini’s Grammar and Computer Science

    Falsehoods

    1. Many people say that in ancient India there were aeroplanes. People who make this claim refer to the Pushpak Viman mentioned in the Ramayan.

    Now it is true that the Ramayan mentions Pushpak Viman, an alleged flying chariot on which Lord Rama was said to have brought Sita from Lanka to Ayodhya, after defeating Ravana. On this basis, it is claimed that there were aeroplanes in ancient India.

    However, we must understand what the Ramayana and the Mahabharata are. They are epic poems, and a poet has the right to exaggerate as he has what is called ‘poetic licence’. So, one must not take all things in poetry literally. Many things are imaginative.

    Everyone knows that the first aeroplane in the world (the Kitty Hawk) was built in America by the Wright brothers in 1903.
    If there were aeroplanes in ancient India, then there must have been engines in ancient India (because an aeroplane requires an engine). In that case, soldiers should have fought in tanks, instead of in chariots and horses as depicted in the Ramayan and Mahabharata.

    1. Similarly, the claim that there were guided missiles and atom bombs in the ancient India (because there is a mention of brahmastra, agnyastra, narayanastra, etc., in the Mahabharata and the Ramayana) is also nonsense. These were only poetic imaginations.

    1. Indian Prime Minister Modi claimed that ancient Indians knew head transplant surgery and genetic science, and he referred to the alleged head transplant of the god Ganesh and birth of Karna outside Kunti’s womb in the Mahabharat.

    Vedic plastic surgery to test-tube Karna — non-science claims flowed from Modi downwards

    PM Modi takes leaf from Batra book: Mahabharat genetics, Lord Ganesha surgery

    Indian prime minister claims genetic science existed in ancient times


    In my opinion, the claim that ancient Indians knew head transplant surgery is humbug

    Firstly, a lot of our blood while circulating in our body goes to the head (maybe one-third of the total), and therefore, a head surgery causes a lot of blood loss, which one’s body will not be able to sustain.

    Secondly, it must be realised that one is really one’s brain. All one’s thinking, reasoning, memories, commands to the various parts of the body, recording of sensations, etc., are functions of the brain.

    If one loses one’s leg or hand, an artificial limb can replace it. Also, there can be a heart, kidney or liver transplant. But if one’s head is transplanted (assuming that can be done), and another person’s head is put in its place, it will be that other person living in one’s body.

    1. In January 2019, speakers at the 106th Indian Science Congress claimed that it was ancient Hindus who pioneered stem cell research. “We had 100 Kauravas from one mother because of stem cell and test tube technology,” G Nageshwar Rao, the Vice Chancellor of Andhra University said, referring to the ancient Hindu epic Mahabharata.

    This shows how pseudo science has been promoted in recent years, not just by politicians ( who of course have their agenda ), but also by persons claiming to be scientists ( as in Nazi Germany ).

    1. In April 2018, Tripura’s chief minister Biplab Deb used an example from the Mahabharata to claim that the internet was invented by ancient Indians thousands of years ago. He said the fact that one of the characters in the epic, Sanjaya, had been able to give an account of the Kurukshetra battle that was taking place miles away to King Dhritarashtra proved that ancient India had the internet and satellite technologies.

    Others have claimed that we discovered the theory of gravity long before Newton and Einstein, that cow urine can cure cancer, etc.

    More examples of such ridiculous claims even by prominent people are given in the articles below :

    The false scientific claims made during Modi’s first term

    BJP and Science: From Ganesha’s plastic surgery to ‘Yoga can cure cancer’

    Bowel cleanse for better DNA: the nonsense science of Modi’s India

    Those magnificent men and their machines

    The Indian born Nobel laureate Venkatraman Ramakrishnan has said that the Indian Science Congress is a circus, and vowed he would never attend it again

    Why do Modi and his Mantris Mock Science?
    Indian Academics Confront the Threat of Nationalistic Pseudoscience

    All this reminds us of Nazi Germany, where racial ‘science” was assiduously and relentlessly promoted

    Science and political ideology: The example of Nazi Germany

    Deep roots of Nazi science revealed
    I submit that by making absurd and untrue claims about our alleged scientific ‘achievements’, we mix up the true with the untrue, replace scientific rigour by humbug, and make the true, which we should be proud of, questionable in the eyes of foreigners, and often laughed at.

    Today India has huge socio-economic problems ( poverty, malnutrition, unemployment, etc ) and in my opinion these can only be solved by science. But this must be real science, not pseudo science, bunkum, and humbuggery

    Indian’s and Science

  • Smartivity Hydraulic Plane Launcher STEM DIY Fun Toy for Kids 6 to 14, Best Birthday Gift Toy for Boys & Girls Age 6-8-10-12, Science Toy, Educational Based Activity Game, Made in India

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  • Progressive farmers of JK: Pol Science graduate ‘Chaspeeda’ of Baramulla becomes role model in agri farming – Kashmir News

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    ( With inputs from : kashmirnews.in )

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  • Carbon dioxide removal: the tech that is polarising climate science

    Carbon dioxide removal: the tech that is polarising climate science

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    For some scientists, they are the inevitable next stage of staving off the existential threat of climate chaos. For others, they should not even be talked about.

    Carbon dioxide removal (CDR) technologies, which provide a means of sucking carbon out of the atmosphere, are one of the hottest areas of climate research, but also the most controversial.

    The debate over whether and how to develop CDR has been ignited by the release last month of the final section of the comprehensive review of climate science by the Intergovernmental Panel on Climate Change (IPCC). The report found that ways of capturing and storing carbon dioxide, though expensive, might play a role in trying to keep global temperatures within safe bounds.

    But scientists and policymakers are divided. Some say the technology must be the immediate priority for research. Others urge caution, and warn against putting faith in untested technology before we have even fully deployed the reliable low-carbon technologies, such as renewable energy, that we already have.

    icebergs
    David King is working with Cambridge University’s department of engineering to try to find ways of refreezing the Arctic Photograph: NurPhoto/Getty Images

    John Kerry, the US special presidential envoy for climate, talked of his concerns. “Some scientists suggest that it’s possible there could be an overshoot [of global temperatures, beyond the limit of 1.5C above pre-industrial levels that governments are targeting] and you could clawback, so to speak; you have technologies and other things that allow you to come back.

    “The danger with that, which alarms me the most and motivates me the most, is that according to the science, and the best scientists in the world, we may be at or past several tipping points that they have been warning us about for some time,” he said. “That’s the danger, the irreversibility.”

    The former UK government chief scientific adviser Sir David King strenuously disagrees. He believes CDR of many kinds will be needed, along with the means to “repair” the climate, such as by refreezing the ice caps, because the world is almost certain to overshoot the global target limit of 1.5C above pre-industrial levels.

    “We are already at 1.35C above pre-industrial levels today,” he said. “We are already experiencing massive warming in the Arctic, where it’s more than 3C above the pre-industrial average.”

    A rash of new technology startups bears witness to the potential business opportunity that many companies and investors see in CDR. These fledgling companies are exploring everything from “scrubbers” that chemically remove carbon dioxide from the air, to “biochar”, which creates fertiliser from burning wood waste without oxygen, and carbon capture and storage (CCS) by which carbon dioxide is liquefied and pumped into underground geological formations. They have taken the IPCC report as a spur to investment, and a stamp of approval.

    “Growing carbon removal to be in line with the IPCC requires a massive scale-up in the next decade. Startups are meeting this climate challenge by developing a suite of approaches that can make a gigaton impact,” said Tania Timmermann, the chief technology officer of Andes, a company that plans to use micro-organisms to sequester carbon in soil.

    Ben Rubin, the executive director of the Carbon Business Council, which represents several CDR specialists, said: “The IPCC report makes clear that the window of opportunity is closing quickly, highlighting the urgent need to reduce greenhouse gas emissions. Reducing emissions is crucial but not enough: the report affirms that gigatonnes of carbon removal are required to help restore the climate,” he said. “Innovators are actively working to meet this climate challenge, by finding cost-effective and responsible ways to deploy carbon removal.”

    But the key section of the IPCC report, which ignited the controversy, was fiercely fought over by scientists and governments up until the last moments before the document was finalised. The handful of mentions of CDR in the final 36-page summary for policymakers – which distils the key messages and is compiled by scientists alongside government representatives from any UN member that wants to take part – were only inserted after hours of desperate wrangling.

    Saudi Arabia and other oil-producing countries were most insistent that CDR and CCS should be included and emphasised. In the end, nine references to CDR were left in the summary, and several more to CCS.

    “Saudi Arabia brought 10 very experienced negotiators,” said one person. “They tried to take out references to renewable energy and tried to insist that references to carbon capture should be in there instead of, or at least as well as, renewables.”

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    A CCS facility in Alberta, Canada
    A CCS facility in Alberta, Canada. Photograph: Todd Korol/Reuters

    But many scientists, campaigners and green experts are unhappy with the references. They fear that giving the impression there are viable options for removing carbon dioxide might engender a false sense of security. Most CDR technologies are unproven, are likely to be limited in scope, take years to develop and will cost large amounts of money.

    Lili Fuhr, the director of the climate and energy programme at the Center for International Environmental Law, said: “We need to challenge the idea that we have to do less now, because we can do more later, with technofixes. This is a dangerous idea.”

    Friederike Otto, a lead author of the IPCC, and senior lecturer at the Grantham Institute at Imperial College London, said: “My feeling about CDR is that we should pretend it is not an option. We should act as if CDR will never be achievable. We do not have a technology at the moment that works at scale … so we should make our policies as if CDR is not an option.”

    She said pursuing CDR could be a dangerous distraction, and questioned whether it was a good idea to spend money on technologies that offered highly uncertain future benefits, when viable ways of reducing emissions now were not being deployed fast enough. “CDR has already been used as an excuse to dither and delay,” she said.

    Otto said: “It’s very important to highlight that we still can keep to 1.5C – we have the knowledge and the tools to do it. But what we do not have is a sense of urgency and political will.”

    King acknowledges that some scientists have concerns about CDR, but he believes it is needed because of the failure to act before now. “[Those who object] are taking the exact position I took in 2015, when I was leading global negotiations for the UK,” he said. “But there is no time for messing about now.”

    King, who is working with Cambridge University’s department of engineering to try to find ways of refreezing the Arctic, points out that the IPCC report found only a narrow opportunity for the world to limit heating to 1.5C, that relies on massive reductions in greenhouse gases in the next few years, which is unlikely to happen.

    “The IPCC does not go nearly far enough on CDR,” he said. “I believe it is more than likely we will hit 1.5C by the end of the decade. It’s false thinking, that the IPCC is saying we can manage [to stay below that level] with reducing emissions. The carbon we have put up [in the atmosphere] will have to be removed. It may cost a fortune, but we have to recognise that the alternative is to lose our civilisation.”

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    ( With inputs from : www.theguardian.com )

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  • Genius Box Ballista Launcher DIY STEM Educational Toy & Construction Based Fun Activity Game for Kids, Science Experiment Kit for Boys & Girls 8 to 14, Best Gift, Learning Toy & Activity Kit for Kids

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  • JKBOSE Class 10th Science Multiple Choice Questions: Check

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    JKBOSE Class 10th Science Multiple Choice Questions: Check Your Answers Here

    Check your answers for JKBOSE Class 10th Science multiple choice questions here.

    Q 1:- A ray of líght goes from water into air. Will it bend towards normal ?

    Ans: No, a ray of light going from water into air will actually bend away from the normal.

    Q 2:- Name the mirror which can give an errect and enlarged image of an object ?

    Ans: The concave mirror can give an erect and enlarged image of an object.

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    Q 3:- Which type of lens has a posítive power ?

    Ans: A converging lens, also known as a convex lens, has a positive power.

    Or

    A diverging lens has a focal length of 0.10m. What is it’s power ?

    Ans: The power of the diverging lens is -10 diopters.

    The power (P) of a lens is given by the formula P = 1/f, where f is the focal length of the lens.

    Given that the focal length of the diverging lens is 0.10m, we can calculate its power as:

    P = 1/f = 1/0.10m = 10 diopters (D)

    Therefore, the power of the diverging lens is 10 diopters (D).

    Q 4:- The coloured light having the maximum speed in glass prism is :

    Ans: Violet light has the maximum speed in a glass prism.

    Q 5:- Out of an A.C. generator and a D.C. generator, which one uses a commutator ?

    Ans: A DC generator uses a commutator.

    Q 6:- At the time of short circuit, what happens to the current ?

    Ans: In a short circuit, the current in the circuit can increase dramatically.

    Q 7:- The modern periodic table was prepared by ?

    Ans: The modern periodic table was prepared by Russian chemist Dmitri Mendeleev.

    Q 8:- Name the functional group which always occurs in the middle of carbon chain ?

    Ans: The carbonyl group (C=O) always occurs in the middle of a carbon chain in ketones.

    Or

    Why does ethyne burn with a scooty flame ?

    Ans: Ethyne burns with a sooty flame due to incomplete combustion caused by its low hydrogen-to-carbon ratio.

    Q 9:- The noble gas having only two electrons in its valence shell is :

    Ans: The noble gas that has only two electrons in its valence shell is helium (He).

    Q 10:- The number of molecules of water of crystallisation present in washing soda crystal is :

    Ans: There are 10 molecules of water of crystallisation present in each washing soda crystal.

    Q 11:- Do all cells use oxygen to produce energy ?

    Ans: No, not all cells use oxygen to produce energy. Some cells can produce energy without oxygen through anaerobic respiration.

    Q 12:- Name the organism which has parasitic mode of nutrition ?

    Ans: Parasites have a parasitic mode of nutrition.

    Q 13:- What is the other name of sex cells ?

    Ans: The other name for sex cells is gametes.

    Please note that the information provided is for informational purposes only and may not be entirely accurate. It is recommended to verify the information before relying on it solely.

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    ( With inputs from : kashmirpublication.in )

  • JK Bose Class 10th 2023 Science Guess Papers PDF

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    JK Bose Class 10th 2023 Science Guess Papers PDF


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    JKBOSE 10th Model Paper 2023 contain representative questions for the board exams. If you are studying in class 10th in jammu and Kashmir Jkbose, then download the JKBOSE Class 10th guess papers

    The JKBOSE Guess Paper for Class 10th Science is as follows. You should solve this after completing class 10th  Science syllabus. It gives you a good idea of what to expect in Science question paper in board exams.

    There are 2 Guess Papers Of 10th Science Download Both Below 

    Guess Paper 1

    JkBose 10th Science Guess Paper 1 Click Here To Download Pdf

    Guess Paper 2

    JkBose 10th Science Guess Paper 2 Click Here To Download Pdf

     

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    ( With inputs from : kashmirpublication.in )