Know The Scientist
Paul Dirac – the mystifying genius with a doleful past
Meet the enigmatic British physicist who combined quantum mechanics with Einstein’s theory of special relativity.
The Nobel-winning contribution
Quantum mechanics presented a radical new picture of the world that defied intuition. In this radical theory, we can’t predict reality with certainty anymore. This was in direct conflict with the tenets of classical physics that Newtonian physics and Einstein’s theories of relativity were based on.
It didn’t develop overnight though. It had gone through several years of iteration after constant addition of key principles. And for the theory’s intuition defying predictions, it didn’t have an overnight reception either. One of the famous detractors was Albert Einstein, who famously said, “God does not play dice,” at the 1927 Solvay Conference. But then Niels Bohr, the other great physicist at the time somewhat humorously said, “Einstein, don’t tell God what to do!”.
Despite the successes quantum theory had in the 1920s, its proponents knew that the theory was incompatible with Einstein’s special theory of relativity. Einstein’s theory postulates that nothing in the universe can cross the speed of light barrier. For any object with mass, it must otherwise possess unlimited energy to reach the speed of light. The postulate holds as real as ever, and is a fundamental tenet of modern physics. However, quantum physics which lacked a strong mathematical rigor until then didn’t incorporate the postulate. At least, until Paul Dirac would arrive with his eponymous equation in 1928 – the Dirac equation.
Dirac began as a skeptic of quantum theory, sharing the same sentiments as Einstein. Dirac’s biographer, Graham Farmelo, recalled him deriding Heisenberg’s work on the uncertainty principle, when he was a young PhD student, scribbling away, “Nature can’t be this complicated,” on top of the paper and brushing it aside.
But not for long though. In what Dirac fondly recalled as his profound work when he proved that Heisenberg’s and Schrodinger’s mathematical descriptions of quantum theory essentially predicted the same physical phenomena. He became a convert at last, championing the theory he had long detested.
But Dirac’s magnum opus came when he finally developed the relativistic wave equation that finally seamed together quantum mechanics with Einstein’s special theory of relativity.
Dirac was obsessed with mathematical rigor that he knew quantum theory so desperately needed. Experiments often led the way until then for theoretical models to be constructed which validated reality. However, the Dirac equation could predict novel phenomena hitherto undreamt of. His equation could predict every other puzzling phenomena attributed to quantum mechanics until then – including intrinsic spin, magnetism but also antimatter (particles that have the same mass as matter, but opposite electric charge). For these achievements, he was awarded the 1933 Nobel Prize in Physics with Erwin Schrodinger. He was the youngest ever winner at the time.
The reticent genius

Richard Feynman (right) chatting with his ‘hero’ Paul Dirac (left) at the sidelines of a conference in July 1962. Credit: Marek Holzman / Wikimedia
Despite these achievements though, Paul Dirac wasn’t the one to bask in any limelight. In Britain where he grew up, he’s ranked the greatest physicist since Newton, although he’s remotely popular there. Nonetheless, Dirac’s influence was massive at least with physicists entering the fray in his work. Richard Feynman called him his ‘hero’, falling in love with the mathematical rigor and clarity in his work.
“He made a new breakthrough, a new method of doing physics,” said Feynman. “He had the courage to simply guess at the form of an equation, the equation we now call the Dirac equation, and to try to interpret it afterwards.”
But to his immediate colleagues and well-wishers alike, he was as much shy and reticent as one could possibly get. At times he can come across as cold – almost schizoid like. In a sense, he fit the stereotype of the scientist who was below adept at socializing, but was a genius when it came to his intellectual acumen.
However, there could be a more genuine plausible reason. It’s very plausible that his outward appearance was shaped by his severe childhood trauma. At least that’s what one can construe hearing from Graham Farmelo who wrote Dirac’s only biography – released in 2009. Farmelo shed light onto Dirac’s difficult relationship with his father during childhood in great detail. The young Dirac grew up in an abusive and neglectful environment, where he didn’t just have the chance to develop his identity without being constantly intruded by his father who wanted him to be engrossed with his education. It’s pure speculation, but it’s possible that physics gave him respite from having to deal with the outside world.
Niels Bohr once remarked, ‘Paul Dirac must be the strangest fellow to ever visit my institute.’ It wasn’t meant as condescension, although it was meant to highlight Dirac’s eccentric nature.
In some respects, Dirac was as enigmatic and mysterious of a man, as the quantum theory he helped conceive.
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‘You’re admired, because no one understands you’
How does a soft-spoken, late-blooming, introspective young man—once dismissed as lazy and unimaginative—go on to become one of the greatest scientific minds the world has ever known? That story, woven with personal struggles, quiet determination, and an unmatched brilliance, is one of the most inspiring in the history of science. This edition of EP Know the Scientist turns the spotlight on the legend of Albert Einstein
A Meeting of Geniuses
In 1931, two of the most brilliant minds of the 20th century met in Hollywood. One was Albert Einstein, the theoretical physicist who had turned our understanding of the universe on its head; the other, Charlie Chaplin, a master of silent cinema who could move the world to laughter without uttering a word.
“You’re admired because everyone understands you,” Einstein said to Chaplin.
“You’re admired,” Chaplin replied, “because no one understands you.”
That exchange perfectly captured the enigma of Einstein. Though his theories baffled the masses, his influence on science, and on the world itself, was impossible to ignore.
The Face of Modern Physics
Albert Einstein’s contributions to science redefined physics. From his Special and General Theories of Relativity to his explanation of the photoelectric effect, he reshaped how we understand energy, gravity, light, and time. His famous equation, E = mc², may be the most recognized scientific formula in history—a symbol of human curiosity and intellectual might.

Even today, astronomers rely on Einstein’s insights to decode gravitational waves, explain the bending of light around stars, and predict the paths of planets like Mercury. Long after his passing, Einstein continues to be a guiding force in scientific exploration.
A Curious Child
Born in 1879 in Ulm, Germany, to a middle-class Jewish family, Einstein was a quiet child. His parents worried because he spoke late. Teachers misunderstood his dreamy nature. But from a young age, Einstein was captivated by the invisible forces of the world. A simple compass given to him at age five stirred a lifelong fascination with unseen energies.
By 12, a book on Euclidean geometry filled him with awe. He called it his “sacred little geometry book,” and it gave him a glimpse of the order behind nature’s complexity.
Despite a popular myth, Einstein was not bad at math. He excelled in mathematics and physics, though he struggled with the rigid, memorization-heavy Prussian education system. Creative thinking had little space in such classrooms—and Einstein needed space to think.

Failing to Fit, and Finding a Path
At 16, Einstein dropped out of school. He failed the entrance exam to Zurich’s prestigious Polytechnic School on his first try, performing well only in science and math. Undeterred, he studied on his own and passed the exam the following year.
After graduating in 1901, Einstein struggled to find work as a teacher. Eventually, he secured a job as a clerk at the Swiss Patent Office in Bern—a humble position that gave him time to think, scribble equations, and dream about the cosmos. It was during this period that Einstein’s revolutionary ideas took shape.

The Miracle Year
In 1905, while still a patent clerk, Einstein published four papers that would change the course of physics. He explained the photoelectric effect (which would win him the Nobel Prize in 1921), developed the Special Theory of Relativity, and introduced the idea of mass-energy equivalence. These ideas challenged Newtonian physics and formed the foundation of modern science.
At first, his work went unnoticed. But Max Planck, one of the leading physicists of the time, recognized Einstein’s genius. The world soon followed.

Fame, Flight, and Fear
By the 1910s, Einstein’s fame had spread far beyond academic circles. He was offered positions at the most prestigious universities across Europe. In 1915, he completed his General Theory of Relativity—a breathtaking explanation of gravity as the curvature of space-time.
But in 1933, as Hitler rose to power, Einstein fled Germany for the United States, renouncing his citizenship. The man dubbed the “Pope of Physics” took refuge in Princeton, New Jersey, where he would live and work for the rest of his life.
The Atom Bomb and Moral Dilemmas
Einstein’s equation E = mc² implied that immense energy could be released by splitting atoms. Though he was a lifelong pacifist, in 1939, fearing Nazi Germany’s nuclear ambitions, Einstein co-signed a letter to U.S. President Franklin D. Roosevelt urging research into atomic weapons.
Ironically, he was never part of the Manhattan Project. After World War II, horrified by the bomb’s use in Hiroshima and Nagasaki, Einstein became a leading voice against nuclear weapons.

The Man Behind the Mind
Einstein was more than a physicist. He was a violinist, a humanist, and an outspoken critic of nationalism and racism. Though famously disheveled, his mind was razor-sharp. In 1952, he was even offered the presidency of Israel—a role he declined, saying he lacked the experience and temperament for politics.
His personal life was complex. He married twice, had children, and endured heartbreaks, illnesses, and separations. Yet his work remained a constant force—until the very end.
The Brain that Fascinated the World
When Einstein died on April 18, 1955, at the age of 76, he refused life-prolonging surgery. “I want to go when I want,” he said. But the fascination with his mind didn’t end there. The doctor who performed his autopsy, Thomas Harvey, removed Einstein’s brain—without permission. He sliced it into hundreds of pieces, preserving them for study.

Later analyses suggested Einstein’s brain had unusual features—more folds, a larger inferior parietal lobe, and a higher ratio of glial cells. Some researchers believe these might explain his extraordinary cognitive abilities. But others warn against drawing conclusions from a brain no longer alive.
Regardless, Einstein’s mind remains a symbol of limitless human potential.

Legacy Eternal
Sixty-six years after his death, fragments of Einstein’s brain are still preserved in museums around the world. But his true legacy isn’t in physical remains—it’s in every scientific equation that bears his fingerprints, every telescope that bends light to measure distant stars, every classroom where young minds imagine the unimaginable.
In a world hungry for quick answers, Einstein stood for slow, deep thinking. “Imagination is more important than knowledge,” he once said. He gave us the tools to measure time and space—and the courage to wonder what lies beyond both.
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Remembering S.N. Bose, the underrated maestro in quantum physics
Rejected in Britain, celebrated by Einstein, here’s the story of S.N. Bose, the Indian physicist who formulated quantum statistics, now a bedrock theory in condensed matter physics.
It’s 1924, and Satyendra Nath Bose, going by S.N. Bose was a young physicist teaching in Dhaka, then British India. Grappled by an epiphany, he was desperate to have his solution, fixing a logical inconsistency in Planck’s radiation law, get published. He had his eyes on the British Philosophical Magazine, since word could spread to the leading physicists of the time, most if not all in Europe. But the paper was rejected without any explanations offered.
But he wasn’t going to give up just yet. Unrelenting, he sent another sealed envelope with his draft and this time a cover letter again, to Europe. One can imagine months later, Bose breathing out a sigh of relief when he finally got a positive response – from none other than the great man of physics himself – Albert Einstein.
In some ways, Bose and Einstein were similar. Both had no PhDs when they wrote their treatises that brought them into limelight. And Einstein introduced E=mc2 derived from special relativity with little fanfare, so did Bose who didn’t secure a publisher with his groundbreaking work that invented quantum statistics. He produced a novel derivation of the Planck radiation law, from the first principles of quantum theory.
This was a well-known problem that had plagued physicists since Max Planck, the father of quantum physics himself. Einstein himself had struggled time and again, to only have never resolved the problem. But Bose did, and too nonchalantly with a simple derivation from first principles grounded in quantum theory. For those who know some quantum theory, I’m referring to Bose’s profound recognition that the Maxwell-Boltzmann distribution that holds true for ideal gasses, fails for quantum particles. A technical treatment of the problem would reveal that photons, that are particles of light with the same energy and polarization, are indistinguishable from each other, as a result of the Pauli exclusion principle and Heisenberg’s uncertainty principle.
Fascinated and moved by what he read, Einstein was magnanimous enough to have Bose’s paper translated in German and published in the journal, Zeitschrift für Physik in Germany the same year. It would be the beginning of a brief, but productive professional collaboration between the two theoretical physicists, that would just open the doors to the quantum world much wider. Fascinatingly, last July marked the 100 years since Einstein submitted Bose’s paper, “Planck’s law and the quantum hypothesis” on his behalf to Zeitschrift fur Physik.
With the benefit of hindsight, Bose’s work was really nothing short of revolutionary for its time. However, a Nobel Committee member, the Swedish Oskar Klein – and theoretical physicist of repute – deemed it a mere advance in applied sciences, rather than a major conceptual advance. With hindsight again, it’s a known fact that Nobel Prizes are handed in for quantum jumps in technical advancements more than ever before. In fact, the 2001 Nobel Prize in Physics went to Carl Wieman, Eric Allin Cornell, and Wolfgang Ketterle for synthesizing the Bose-Einstein condensate, a prediction made actually by Einstein based on Bose’s new statistics. These condensates are created when atoms are cooled to near absolute zero temperature, thus attaining the quantum ground state. Atoms at this state possess some residual energy, or zero-point energy, marking a macroscopic phase transition much like a fourth state of matter in its own right.
Such were the changing times that Bose’s work received much attention gradually. To Bose himself, he was fine without a Nobel, saying, “I have got all the recognition I deserve”. A modest character and gentleman, he resonates a lot with the mental image of a scientist who’s a servant to the scientific discipline itself.

But what’s more upsetting is that, Bose is still a bit of a stranger in India, where he was born and lived. He studied physics at the Presidency College, Calcutta under the tutelage that saw other great Indian physicists, including Jagdish Chandra Bose and Meghnad Saha. He was awarded the Padma Vibhushan, the highest civilian award by the Government of India in 1954. Institutes have been named in his honour, but despite this, his reputation has little if no mention at all in public discourse.
To his physicists’ peers in his generation and beyond, he was recognized in scientific lexicology. Paul Dirac, the British physicist coined the name ‘bosons’ in Bose’s honor (‘bose-on’). These refer to quantum particles including photons and others with integer quantum spins, a formulation that arose only because of Bose’s invention of quantum statistics. In fact, the media popular, ‘god particle’, the Higgs boson, carries a bit of Bose as much as it does of Peter Higgs who shared the 2013 Nobel Prize in Physics with Francois Euglert for producing the hypothesis.
Know The Scientist
Narlikar – the rare Indian scientist who penned short stories
Jayant Narlikar has been one of the most prolific scientists, and science communicators India has ever produced. The octogenarian had died at his residence in Pune.
Jayant Narlikar passed away at his Pune residence on Tuesday. He was 86-years old, and had been diagnosed with cancer. With his demise, India lost a prolific scientist, writer, and institution builder.
In 2004, the government of India had honored Narlikar with the Padma Vibhushan, the second-highest civilian award, for his services to science and society. But that was not his first recognition from the Indian government. At the age of 26, he had received his first Padma Bhushan, in recognition for his work in cosmology, studying the universe’s large-scale structures. He helped contribute to derive Einstein’s field equations of gravity from a more general theory. That work, dubbed the Narlikar-Hoyle theory of gravity, was borne out a collaboration with Narlikar’s doctoral degree supervisor at Cambridge; Fred Hoyle, the then leading astrophysicist of his time.
Narlikar and the steady-state theory
Narlikar and Hoyle bonded over a shared skepticism towards the prevalent Big Bang hypothesis, which sought to extrapolate the universe’s ongoing expansion to its birth at some finite time in the past. However, Narlikar and Hoyle could not have been more opposed, mostly out of their own philosophical beliefs. They drew upon the works of 19th century Austrian physicist and philosopher, Ernest Mach, in rejecting a theory discussing the universe’s beginning in the absence of a reference frame. As such, Narlikar was a strong proponent of Hoyle’s steady-state model of the universe, in which the universe is infinite in extent, and indefinitely old. As such, the steady-state theorists explained away the universe’s expansion to matter being spawned into existence from this vacuum at every instant, aka a C-field.

However, the steady-state’s predictions did not hold up in face of evidence the universe expands over time. Nor did its successive avatar, the quasi-steady state theory devised sway scientific consensus. The death knell came when evidence of the cosmic microwave background (aka the CMB) was discovered in 1964.
Despite steady-state’s failure, it provided healthy rivalry to the Big Bang from the 1940s to the 60s, providing opportunities for astronomers to compare observations to precise predictions. In the words of the Nobel laureate Steven Weinberg, “In a sense, this disagreement is a credit to the model; alone among all cosmologies, the steady state model makes such definite predictions that it can be disproved even with the limited observational evidence at our disposal.”
The Kalinga winning short-story writer
Narlikar was more than just a cosmologist, studying the large-scale structure of the universe. He also had been an acclaimed science fiction writer, with his works penned in English, Hindi, and in his vernacular, Marathi. His famous work was a short-story, Dhoomekethu (The Comet), revolving around themes of superstition, faith, rational and scientific thinking. Published in Marathi in 1976, with translations available in Hindi, the story was adapted later into a two-hour film bearing the same name. In 1985, the film aired on the state-owned television broadcasting channels, Doordarshan.
In a way, he was India’s Carl Sagan, airing episodes explaining astronomical concepts, with children being his target audience. The seventeen-episode show, Brahmand (The Universe), aired in 1994, to popular acclaim. One of his most popular books, Akashashi Jadle Nathe (Sky-Rooted Relationship), remains popular. An e-book version in Hindi is available on Goodreads, with 470 reviewers lending an average rating of 4.7 out of 5.
His efforts was honored with an international prize. In 1996, he received the much-coveted Kalinga Prize for the Popularization of Science, awarded annually in India by the United Nations Educational, Scientific and Cultural Organization (UNESCO), “in recognition of his efforts to popularize science through print and electronic media.” Narlikar had been only the second Indian at the time, after the popular science writer Jagjit Singh, to have received the award.
When Narlikar returned to India, accepting a position at the Tata Institute of Fundamental Research (TIFR), he realized that the fruits of astrophysical research did not flourish outside central institutions. Though Bengaluru had an Indian Institute of Astrophysics, Narlikar envisioned basing a research culture paralleling his time at Cambridge. Hence, the Inter-University Centre for Astronomy and Astrophysics (IUCAA) was born in 1988, and Narlikar was appointed its founding director. Arguably, his most visible legacy would have been to shape India’s astrophysical research culture through his work with the IUCAA (pronounced “eye-you-ka”).
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