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How science & tech flourished in ancient India

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By Nanditha Krishna

January 14 is Makara Sankranti, and it is celebrated all over the country and wherever Indian culture has spread. It is known as Bihu in Assam, Pongal in Tamil Nadu, Uttarayan in Uttar Pradesh, Shishur Saenkraat in Kashmir, Songkran in Thailand, Thingyan in Myanmar, Mohan Songkran in Cambodia and so on. On this day, the sun, the source of life on earth, transits into Capricorn and moves into the northern hemisphere. The knowledge of this astronomical feat is as old as the Indian civilisation.

Indian astronomy has a long history and was a Vedanga, an auxiliary discipline associated with the study of the Vedas, dating back to 1,500 BCE or earlier. Varahamihira, Aryabhata, Bhaskara, Brahmagupta and others were astronomers who even mention their scientific instruments. Maharaja Jai Singh II of Jaipur constructed five Jantar Mantars in New Delhi, Jaipur, Ujjain, Mathura and Varanasi. They give us a good idea of the early scientific tools.

India produced great scientists and mathematicians. Baudhayana in 800 BCE calculated the value of pi and discovered what is now known as the Pythagoras’ theorem. Pythagoras lived in sixth century BCE Greece; and the third century CE sophist Philostratus says that Pythagoras studied under Hindu sages or gymnosophists in India. Brahmagupta lived in seventh century Ujjain and wrote several books on mathematics and astronomy. India was the source of the number system, now called the Arabic numerals because the Arabs took it everywhere. This number system is a feat of genius. It enables all numbers to be expressed with just ten symbols—the numbers 1 through 9 and the symbol for zero.

Without this key, we would have a separate word for each number and be hopelessly confused. It is this brilliant Indian numeral system that makes mathematics, modern accounting, business deals and computer technology possible; from Wall Street to the space programme, modern civilisation depends on this number system. Brahmagupta was the first to discuss zero as a number and established the basic mathematical rules for it. He did a lot of work in geometry, trigonometry and discovered new theorems. He also explained how to find cubes, cube roots, squares and square roots.

Fifty years before the Italian mathematician Fibonacci wrote about the number sequence, now known as the Fibonacci numbers, a sage named Hemchandra wrote about this sequence, but even he was not the first Indian to do so. An earlier Indian mathematician named Gopala had also studied these numbers. And several earlier Indian mathematicians also knew about them.

In 500 CE, Aryabhata, and later Brahmagupta understood that the earth is round. They talked about gravity, saying that it is the nature of the earth to attract objects, causing them to fall towards the ground.

Bhaskaracharya wrote about arithmetic, geometry, algebra and calculus. Isaac Newton and Gottfried Wilhelm von Leibniz are given credit for being the first to introduce calculus, but Bhaskaracharya had written about it 500 years earlier.

Bhaskaracharya had calculated the time taken for the earth to travel around the sun: 365.2588 days. The modern measurement is 365.25636, a difference of just 3.5 minutes. He did not work with instruments or computers. He knew that the earth travels around the sun at a time when the West did not; when people thought the sun revolved around the earth.

But it was not in mathematics alone that Indians flourished. Sushruta was a great surgeon who used 125 different surgical instruments and herbal sprays before an operation to prevent sepsis. His greatest contribution was in the fields of plastic surgery and cataract removal. When the British arrived, they learned these sciences from Indian doctors, cut off their fingers so that the Indians could never practise again, and introduced plastic and cataract surgery in British medical colleges as their invention. Charaka wrote about herbal treatments that Indians are just rediscovering. In 300 BCE, Patanjali codified the Yoga sutras. In 200 BCE, Kanada wrote about gravity and that the universe is made up of atoms. Nagarjuna was a great metallurgist and chemist. The list is endless.

Indian science and technology began at Mehrgarh (now in Pakistan) and continued throughout the country’s history. People developed different systems of agriculture, irrigation, canals and water storage systems, including artificial lakes, by 3,000 BCE. Cotton was cultivated by 5,000–4,000 BCE. They farmed with animal-drawn ploughs in the Indus Civilisation in 2,500 BCE. The people of the Indus-Sarasvati region used weights and measures. Large numbers are used in the Vedas.

The earliest-known dock in the world, which could berth and service ships, was situated at Lothal in Gujarat. Indian metallurgy was very advanced. Steel was made in India from 500 BCE. King Porus gifted Alexander a steel sword in 326 BCE. The iron pillar located in Delhi is seven metres high and has never rusted. Over 5,000 years ago, there were dentists in the Indus-Sarasvati region. A modern scientist who was looking at the teeth of people who had died there long ago found that ancient dentists had drilled teeth as far back as 9,000 years ago.

Young people should be taught about the scientific and mathematical achievements of India.

But it should be scientific, logical and truthful. Unfortunately, even centres of higher learning are claiming the impossible. We do not need to resort to falsehoods to establish our scientific prowess. The truth is sufficiently amazing. What we can be sure of is that India played a central role in all that is known today of mathematics and many sciences, and our civilisation discovered these concepts several millennia before they were known in Europe.

Nanditha Krishna
Historian, environmentalist and writer based in Chennai
(nankrishna18@gmail.com)



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The challenge of being positive about SAARC

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The RCSS forum addressed by SAARC Secretary General Ambassador Md. Golam Sarwar in progress. (Pic courtesy RCSS)

It was a few years back that a former President of Sri Lanka took it on himself to pronounce SAARC ‘dead’. Since then there have been other sections of Sri Lankan opinion that have joined the critics of SAARC and taken the solemn stance that SAARC has indeed died what may be called a natural death.

Their fatalism is understandable. SAARC has failed to meet at heads of government or state level for the past several years to take the SAARC process notably forward. Regional cooperation has more or less been only an appealing idea. No substantive concrete projects have taken off to make the idea a hard reality. ‘Inner paralysis’ seems to be SAARC’s lot. Hence the fatalism in these circles.

However, being one of the worst cash-strapped regions of the world and a teemingly populated one with people virtually left to their devices, what choices do the ‘SAARC Eight’ have other than to try their best to band together and continue with their cooperation efforts, however small they may be?

There is no escaping the mounting debt trap for many of these countries and bankrupt Sri Lanka is a glaring example, but ‘throwing in the towel’ and abandoning themselves entirely to the diktats of the strongest economies and their agencies will prove a ‘living death’ for many countries in the SAARC fold.

The gains may be meagre but giving-up on SAARC cooperation in full would prove self-defeating for the organization and South Asia. Right now, the collective intention ought to be to salvage what the region could from the tenuous cooperative efforts. Moreover, such initiatives could go some distance to generate a degree of goodwill among the Eight and help in sustaining a dialogue process.

Given this backdrop it proved ‘a stich in time’ for the Regional Centre for Strategic Studies (RCSS), Colombo, to recently host the SAARC Secretary General Ambassador Md. Golam Sarwar to a round table discussion on the unifying potential of SAARC and its future possibilities, besides other related issue areas.

Held on June 24th and moderated by RCSS Executive Director and former ambassador Ravinatha Aryasinha, the forum brought together a vibrant, wide ranging audience comprising academicians, diplomats, senior public servants, civil society activists and many others. Following the presentation by Ambassador Golam Sarwar titled, ‘Reigniting SAARC: Achievements, Challenges and the Way Ahead’, a lively Q&A followed.

The above forum could be described as an act of lighting the proverbial ‘candle’ rather than ‘cursing the darkness.’ It surely is a ‘darkness’ that could be seen as daunting considering that the region’s pivotal powers, India and Pakistan, are failing to act in a spirit of accord but are engaged in bitter finger-pointing on a number of questions of vital importance to SAARC.

On the other hand, what is the rest of the region doing to bring the above sides together? It is disappointing that to date the rest of SAARC has failed to launch a major diplomatic drive to bring peace between the feuding regional heavyweights. It needs to act without delay and establish its earnestness and this effort would need to prove SAARC’s staying power in the unfolding months and even years.

In assessing SAARC’s seeming failure local opinion in particular has failed to factor in what could be described as weak leadership. Since Sheikh Mujibur Rahman of Bangladesh, the founding father of SAARC, the region has failed to produce a visionary leader who could advance the SAARC cause with charisma and drive.

Among other reasons, weak leadership accounts considerably for the faltering and stuttering status, as it were, of SAARC. Badly needed are leaders who could go the extra mile, think less of narrow national interests and work diligently towards the collective well being of the region but SAARC’s millions of ordinary people have been made to wait in vain for leaders of such stature. Instead, they have been burdened with politicians who seem to be relishing the apparently moribund state of SAARC.

Looking back, it could be said that it was the dynamic leadership factor that led to the launching of the Non-Aligned Movement and for its sustenance for a few decades. True, it could be seen in some quarters that NAM is no more, but as in the case of SAARC, the former too has been unfortunate to be burdened over the years with politicians who lack the vision and drive to unflaggingly advance the fortunes of the South. NAM and SAARC lack the dynamism and vision of leaders of the stature of Jawaharlal Nehru, for example, to give them the required guidance and intellectual depth.

The reasons are complex for there not being among us currently political leaders with the vision and the steadfast commitment to advance the legitimate interests of the South. However, it could be stated with conviction that the majority of Southern leaders have too easily caved in to the demands of the global North and its financial agencies.

These leaders have failed to see, for instance, that the largely market economy oriented Northern governments would not view with favour a centrist economic model that attaches priority to the interests of the dis-empowered publics of the South. This realization ought to have dawned on the current government in Sri Lanka, for instance, some while ago but it has no choice but to abide by IMF dictates since economic survival at present is unthinkable without the latter’s succour.

Accordingly for SAARC this should be the time for some soul-searching. Priority needs to be attached to ending the feuding between India and Pakistan since at present the material fortunes of the region hinge largely on these regional giants giving peaceful relations among them a try. This is no easy challenge to meet but some daring, visionary diplomacy needs to take hold among the rest of SAARC.

There is some sense in SAARC bringing the peoples of the region together through programs that address their best collective interests. A meeting of minds among SAARC nations could enable SAARC and its agencies to build a region-wide people’s movement for progressive political and economic change that could in turn lead to the region’s political leaders sensitizing themselves more to the neglected needs of their publics.

However, the time is ‘now’ for the initiation of these progressive changes and the voice of SAARC well wishers would need to drown out those of their critics.

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OPA seminar examines Sri Lanka’s economic recovery, resilience and growth pathways

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(L to R) Dr Achinthya Koswatte, Anushan Kapilan, Dr Harsha Aturupane, Bhanu Wijeyaratne, Vice President, OPA and moderator of the discussion, and Eng Chamil Edirimuny, General Secretary, OPA, at the head table.

A seminar, “Sri Lanka’s Economic Crossroads: Navigating Recovery, Resilience and Growth” was recently held by the Organisation of Professional Associations of Sri Lanka (OPA) at the OPA Auditorium, bringing together economists, OPA members, and professionals from diverse fields for an insightful discussion on Sri Lanka’s economic recovery and future growth prospects.

The event was held under the patronage of Jayantha Gallehewa, President of the OPA, and was jointly organised by the National Issues Committee (NIC) and the Seminars, Workshops and Programmes Committee of the OPA. The event reaffirmed the organisation’s commitment to advancing professional excellence, fostering insightful intellectual engagement, facilitating interdisciplinary knowledge exchange and creating a constructive platform for informed dialogue on issues of national importance.

The panel of speakers comprised Dr. Harsha Aturupane, Lead Economist and Programme Leader for Human Development at the World Bank for Sri Lanka and the Maldives; Dr. Achinthya Koswatta, Senior Lecturer in Economics at the Open University of Sri Lanka, and Anushan Kapilan, Lead Economist at Verité Research.

In his welcome address, the President of the OPA emphasised that Sri Lanka was at a critical juncture in its economic recovery journey where sustained reforms, effective implementation, and collective national commitment are essential to achieving long-term stability, resilience and inclusive growth. He noted that the country had experienced one of the most severe economic crises in its history with the economy contracting by 7.8 percent in 2022 and a further 11.5 percent in 2023, resulting in significant economic and social challenges.

Delivering his introductory remarks Bhanu Wijeyaratne, Vice President of the OPA and Chairman of the National Issues Committee, underscored the need to move beyond short-term economic stabilisation towards a comprehensive agenda of structural transformation. He observed that the economic crisis had revealed deep-rooted weaknesses within the economy, including persistent fiscal pressures, rising public debt, foreign exchange limitations, and insufficient diversification of the export base. He stressed that addressing these challenges through strategic reforms, institutional strengthening and long-term economic planning would be essential to establishing a more resilient and competitive economy.

While acknowledging recent positive developments, including improved inflation management, tourism recovery and signs of economic stabilisation, Wijeyaratne stressed the need to advance reforms aimed at strengthening fiscal discipline, enhancing productivity, improving competitiveness, developing human capital and reinforcing governance and institutional effectiveness.

He further highlighted the important role of professionals, businesses, academia and other stakeholders in contributing to evidence-based dialogue and supporting Sri Lanka’s journey towards a resilient, inclusive and sustainable economic future.

Delivering the keynote presentation, Dr. Harsha Aturupane provided a comprehensive assessment of Sri Lanka’s economic prospects within the broader context of global economic transformation. He argued that Sri Lanka functioned as a small open economy whose performance is significantly influenced by developments in the global marketplace. External factors could not be controlled, and the country must strengthen its domestic capacity and resilience to respond effectively to international economic shifts, he noted.

Tracing the evolution of global economic systems, Dr. Aturupane highlighted the transition from ideological divisions between state-controlled and market-oriented economies towards increasingly pragmatic approaches focused on growth, competitiveness and development. He noted that Sri Lanka’s own economic journey reflects a similar evolution, with contemporary policy debates now centred on practical solutions for sustainable economic progress.

The presentation also examined the transformative impact of globalisation. Dr. Aturupane observed that global economic integration had enabled several East Asian economies, including South Korea, Singapore, Taiwan and Hong Kong, to achieve remarkable economic advancement through export-led growth strategies. Sri Lanka similarly benefited from this process through the expansion of its apparel industry and increased integration into global value chains.

Turning to Sri Lanka’s recovery programme, Dr. Aturupane emphasised that the ongoing stabilisation process should be viewed as a national programme supported by the International Monetary Fund rather than solely as an IMF initiative. He observed that strong worker remittances, improved tourism earnings, enhanced government revenue mobilisation and prudent import management have contributed significantly to economic stabilisation.

Despite this progress, he cautioned that rebuilding foreign exchange reserves and meeting future debt obligations remain major challenges. He underscored the need to strengthen export performance, attract investment and generate sustainable foreign exchange earnings to ensure long-term economic resilience.

The discussion also focused on monetary stability, inflation management and exchange-rate policy. Dr. Aturupane stressed that maintaining price stability was fundamental to sustainable growth and household welfare, while sound monetary policy remains essential for preserving economic confidence.

Looking beyond stabilisation, he argued that Sri Lanka must transition towards a broader economic transformation agenda. Sustainable growth, he noted, will depend on expanding productive capacity through investment, technological advancement, innovation, skills development and structural reforms.

Among the key constraints identified was the high cost of energy, which continues to affect competitiveness and investment attractiveness. Dr. Aturupane emphasised the importance of improving efficiency and affordability within the energy sector to enhance Sri Lanka’s business environment.

He further highlighted the social dimensions of the crisis, noting the rise in poverty and economic vulnerability among households. Strengthening social protection systems and ensuring inclusive growth, he argued, must remain central components of the national development agenda.

Another critical challenge identified was Sri Lanka’s demographic transition. With an ageing population, outward migration and evolving labour market dynamics, the country is increasingly confronting labour shortages in several sectors. Dr. Aturupane suggested that greater automation, increased labour-force participation and strategic workforce planning would be necessary to address these emerging realities.

Concluding his presentation, he emphasised the need to improve governance, strengthen institutions, enhance competitiveness and create an enabling environment for private sector investment. Sri Lanka’s future success, he noted, will depend on its ability to move decisively beyond crisis management towards a development model founded on resilience, innovation, productivity and inclusive growth.

Dr. Achinthya Koswatta reiterated the importance of policy consistency and predictability in fostering investment and industrial development. She observed that frequent policy changes create uncertainty and discourage long-term investment decisions, whereas stable and coherent policy frameworks build confidence and support sustainable economic transformation.

Meanwhile, Anushan Kapilan highlighted the substantial progress achieved in restoring macroeconomic stability following the recent crisis. He noted significant improvements in fiscal performance, including increased government revenue, reduced reliance on debt financing and a historically low fiscal deficit.

He further observed that public debt levels are declining faster than anticipated, economic growth has exceeded expectations and inflation has been brought under control more rapidly than forecast. Nevertheless, he cautioned that the recovery remains uneven, particularly within the industrial sector and that many households have yet to experience a meaningful improvement in living standards.

The seminar was expertly coordinated by Eng. Chamil Edirimuni, Vice President of the OPA and Chairman of the Seminars, Workshops and Programmes Committee, while the technical moderation and interactive discussion session were facilitated by Bhanu Wijeyaratne, Vice President of the OPA and Chairman of the National Issues Committee.

The event was attended by Tisara De Silva, President-Elect of the OPA, Eng. Ravi Rupasinghe, General Secretary, Past Presidents, members of the Executive Council, representatives of the General Forum and professionals representing a wide range of disciplines.

The seminar concluded with a vibrant exchange of ideas and perspectives, reaffirming the importance of evidence-based policy dialogue, institutional collaboration and collective national commitment in advancing Sri Lanka’s economic recovery, resilience and sustainable growth.

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Her roots run deep in Sri Lanka

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Samantha Kay: Now based in the UK Samantha’s biggest passion is helping people, especially women, build confidence and believe in themselves Today, her focus is on radio, podcasting and coaching women Whenever she visits Sri Lanka, she says she loves spending time on the beautiful south coast, especially Hikkaduwa and Mirissa She released a song with 90s music icon Angie Brown, which reached No. 9 in the UK Club Charts

Yes, for UK-based presenter and artiste Samantha Kay, home is where the heart – and the roots – are. And her roots run deep in Sri Lanka.

In an exclusive interview with The Island, Samantha says “I’m proud to be Sri Lankan. My mum is from Kandy and my dad is from Colombo, so Sri Lanka has always held a very special place in my heart.

“Whenever I visit Sri Lanka, I love spending time on the beautiful south coast, especially Hikkaduwa and Mirissa. It’s somewhere I always feel connected to my roots and completely at peace.”

Now living in Bournemouth, on the south coast of England, where, she says, she is lucky to be close to some of the UK’s most beautiful beaches, including the iconic Sandbanks, Samantha has built a career that refuses to fit into one box.

She is a radio presenter, podcast host, singer-songwriter, personal trainer and life coach.

“I genuinely love the variety because every role allows me to connect with people and, hopefully, make a positive difference in someone’s day.”

Of course, music has taken her far.

One of her proudest achievements, she says, was releasing a song with 90s music icon Angie Brown, which reached No. 9 in the UK Club Charts.

She also reached the final stages of The X Factor and performed at Wembley Stadium in front of thousands.

Beyond music, Samantha competed in bikini bodybuilding across the UK, winning several titles. “It taught me discipline, resilience and self-belief,” she recalls.

Today, her focus is on radio, podcasting and coaching women. Her podcast encourages people to live life on their own terms rather than feeling pressured to follow society’s expectations.

Says Samantha: “Whether someone is single, changing careers, travelling solo or simply trying to find their purpose, I want them to know that it’s never too late to create a life that feels authentic. If you’ve ever felt like you don’t fit into the box, maybe you were never meant to.”

Samantha Kay also spent a year in Dubai, performing at five-star hotels, including FIVE, and coaching at the iconic outdoor gym on Palm Jumeirah.

“I taught strength and conditioning classes, and hosted wellness retreats, combining my passion for music, health and inspiring others.”

However, with family matters calling her back to the UK, she made the choice to return. “Family comes first,” she says.

Looking ahead, Samantha plans to grow her radio and podcast work, release more music, and expand her wellness retreats.

“My biggest passion is helping people, especially women, build confidence and believe in themselves,” she says.

“Wherever my career takes me, I hope to continue inspiring others to live with courage, kindness and authenticity, while never forgetting my Sri Lankan roots.”

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