Saturday, July 25, 2020

Physics and Technological Revolutions

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Oem Trivedi

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Physics and Technological Revolutions

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Global Views 360

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July 25, 2020

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IBM Quantum Computer, an innovation based on Quantum Physics

IBM Quantum Computer, an innovation based on Quantum Physics | Source: IBM Research via Flickr

As he witnessed the first detonation of a nuclear weapon on July 16, 1945, a piece of ancient Scripture “Bhagwad Geeta” ran through the mind of Robert Oppenheimer: “Now I am become Death, the destroyer of worlds”. Oppenheimer, alongside the likes of Richard Feynman, Enrico Fermi, George Gamow, was part of the star-studded Physicist squad behind the Manhattan Project.

The biggest implications drawn from the end of WW2 for many might have just been the incoming power Struggle between the US and Soviet Union, but for your average American it went to a great length to show that Physicists form a breed of people who can build dangerously effective technology.

That fact, however, would have been evident to anyone with a brisk walk through Human History itself. Physicists have arguably provided the most significant contributions to the Technological Development of our race. From Archimedes building light reflectors to save the Greek Army from Roman Infiltration to the large-scale Ballistic Missile systems made during WW-II, weaponry technology has been highly influenced by physicists in every generation.

But mere list of armaments cannot do justice to the role played by Physics Research in Technological Developments of our society. To get a feel for that, let’s go back to the fathers of Modern Physics as we know it; Sir Isaac Newton and Galileo Galilei. Galileo had his long list of achievements in creating cutting edge technology of the day, ranging from Telescopes to Thermometers & the Magnetic Compass. Sir Isaac for his part was the reason behind the advent of the Industrial Revolution in Great Britain!

The simple Atwood Machines which have today become mainstay material taught to College Freshman and High School Seniors worldwide, were actually the kind of mechanical models on which the large-scale Factory Machines were built. Newton’s laws kickstarted the modern Technological Revolution and ever since then, Physics has been a constant source of inspiration behind all Technology.

The great pioneers in the field “Natural Philosophy” (the physics of today) after Newton continued the trend which their illustrious predecessor had started. The seminal works on Thermodynamics by the likes of Lord Kelvin, Ludwig Boltzmann, James Clerk Maxwell etc. played the decisive part in creating automobile engines and really any technology which dealt with heat (Spoiler Alert- There were a lot of them!). Maxwell’s work on the famous equations on Electromagnetism now named after him played the most significant part in the mission of making Electricity available to everyone (a conquest now just famously remembered for the fight between Nikola Tesla and Thomas Edison).

While one can point out that Theoretical works cannot lead to new Technology on their own, that assertion is only the half-truth. Sure, building technology on the basis of theoretical physics is mostly down to the Engineers, but one cannot underestimate the effect new theoretical developments and their possible uses have on the construction of new technologies. After all, if one was not able to understand the principles of the conversion of mass to energy or Electric & Magnetic Fields are coupled to each other, then expecting the construction of Nuclear Reactors and virtually all Electric Tech today would have been off the table.

So one might ask, what are the new theoretical ideas which can guide the next leap forward technologically? Well, no one can be quite sure of the form which technology will take in even a couple of decades (who would have thought that Server systems designed for efficiently using giant Data in CERN would one day be heavily used for making memes!).

I would go as far as to say that we have not yet completely exhausted the technological possibilities of the Special Theory of Relativity itself, the most prominent example of game changing technology based on that has been GPS Communication systems. One can hence fail to even imagine the kind of technological (and Industrial) progress technologies built on the revealing concepts from General Relativity and Quantum Mechanics can bestow upon us (I’m even refraining to comment on the Quantum Field Theoretic parts!).

Whatever that physics will lead us to is a mystery time will be most suited to answer, but one can see the effects of Quantum Mechanics in the next Computational Revolution itself; Quantum Computing. To put into perspective the extent of development Quantum Computing can bestow upon us, consider the following.

Computational devices today, which are stronger than the computers which put humans to the moon, are fundamentally built upon binary bit systems. From generating Big Bang like Energies in CERN and reaching past Saturn, to making all the knowledge available to everyone has been done in two bits. While Quantum Computers, which are being vividly researched on, can work with virtually infinite bits ! So, hold on tight as exciting new physics promises some large-scale changes on our Civilization as a whole.

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February 4, 2021 5:10 PM

Captain Lakshmi Sahgal: A beacon of inspiration

Indian freedom movement has given countless heroes who gave the prime of their lives to see India chart her own destiny by throwing out the Britishers. While there were leaders and fighters like Mahatma Gandhi or Netaji Subhash Chandra Bose, whom everyone knows, there were many other bravehearts who gave up their lives and used every ounce of their strength to free India from the clutches of British Rule. Doctor Lakshmi Sahgal was one of them.

Early Life

Lakshmi Swaminathan was born in Madras (now Chennai), which was under the Madras Presidency, British India, on October 24, 1914. Born to influential parents, Lakshmi was enthused with her mother’s contribution in the field of social work and inherited her father’s intelligence, who was a lawyer, and went on to become a doctor.

She received her MBBS degree from Madras Medical college in the year 1938 and a diploma in Obstetrics and Gynaecology, the following year and was a working doctor in the Kasturba Gandhi Hospital, Chennai. Moreover, she established a clinic in Singapore, a year after getting her diploma, for the under-privileged and Indian migrant labourers.

In Singapore she joined hands with the Indian Independence League, a political body headquartered in Singapore, which prepared Indians living outside of India, to seek independence from the harsh British rule.

Indian National Army days

When the Japanese forces lost the 1942 Battle of Singapore to the British Army, DR. Sahgal played a prominent role in tending to the injured war prisoners. Several of these prisoners had not lost hope yet and wanted to begin an Indian Liberation Army. Their wish was granted when Netaji Subhash Chandra Bose visited Singapore in July, 1943. After listening to Bose’s speeches on wanting to establish an army composed of women to fight against the British forces, Lakshmi quickly set up a meeting with Bose and expressed her desire to be a part of the women regiment. She soon launched the Rani of Jhansi regiment, which was a wonderful opportunity for numerous women to do something for their nation.

Lakshmi Swaminathan turned into Captain Lakshmi, which marked the beginning of her inspiring journey in the freedom struggle. Nearly 50,000 women trained and fought under her command. She also carried the title of Colonel in the women’s army unit, the first one ever to be carried by a female in the entire continent of Asia during that time. Her regiment battled against the British forces along with the Axis Powers.

Unfortunately, she was arrested in 1945 in Burma (now Myanmar) and remained there for a year until she was sent back to India.

Later years

Lakshmi married Colonel Prem Kumar Sahgal in March, 1947 in Lahore, British India. Lakshmi Sahgal moved to Kanpur with her husband and carried on with her medical practice, attending to the needs of evacuees after the Partition of India.

After Independence, Lakshmi entered into the world of policy making and represented her party, The Communist Party of India (Marxist), in Rajya Sabha. During the Bangladesh crisis, she was the one who called for medical aid for thousands of refugees from Bangladesh who came into Calcutta. Moreover, she led a medical team to tend to the victims of the catastrophic Bhopal Gas Tragedy and worked towards refurbishing peace during the anti-Sikh riots, both which took place in the year 1984.

In 2002, she was the only opponent of A.P.J Abdul Kalam when she got elected as a candidate in the Presidential elections, of four leftist parties namely the Revolutionary Socialist Party, All India Forward Bloc, the Communist Party of India and the Communist Party of India (Marxist).

DR. Lakshmi Sahgal was awarded the Padma Vibhushan, the second-highest civilian award, in 1998 for her great achievements, by R.K. Narayan. An airport in Dehat district of Kanpur, Captain Lakshmi Sahgal International Airport, is named in her honour.

She passed away on July, 23, 2012 after suffering from a cardiac arrest, at a good age of 97. Her noble deeds did not stop even after her death as she donated her body to Kanpur Medical College for medical research.

She was a true leader who broke the glass ceiling and barged into the male dominated world of revolutionary army which played a great role in throwing out the Britishers from India. After India’s independence she excelled in another male dominated domain, politics. Hers is an inspiring story that women can be equally brave and fierce as men and can achieve anything by showing perseverance.

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