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

Why the people are protesting in Hong Kong

Hong Kong is a special administrative region of the People’s Republic of China located on the Eastern Pearl River Delta of the South China Sea. From 1842 to 1997, the region was under the control of the Britishers.

In 1997 the  sovereignty of Hong Kong was transferred to China with the principle of “one country, two systems” which provided some degree of autonomy for Hong Kong. This system was supposed to be in force for a period of minimum fifty years from 1997 to 2047. However, under President Xi Jinping, China has been aggressively making such rules and regulations which increase the influence of mainland China on administration of Hong Kong.

In June 2020, China started implementing a new national security law for which potentially severely limits the independence of the judiciary of Hong Kong. Under the proposed law, Hong Kong’s Chief Executive, who is answerable to Beijing, gets the power to appoint judges for specific security cases. It also calls for setting up a security agency in Hong Kong to resolve existing conflicts and challenges faced by Beijing with respect to Hong Kong.

China defended the law by citing that it would prevent and punish secession, subversion as well as foreign infiltration. Beijing has argued that these three factors are responsible for fuelling unrest in the city since last year. Critics however have very different opinions regarding the law. For them this law directly attacks the relative autonomy granted to Hong Kong after Britain handed it back to China in 1997.

The law can potentially be employed to target anti-government protests and other forms of dissent in the region of Hong Kong. It has instilled fear in the minds of the Hong Kong residents that the Chinese Communist Party is trying to curb the freedom of speech and protest in the region in an effort to bring Hong Kong under its authoritarian rule.

Many protesters are of the belief that the local governments of Hong Kong are no longer autonomous and act on the whims of Beijing. They accuse the city's top leader, Chief Executive Carrie Lam, who is appointed by Beijing, of acting only in the interest of mainland China while ignoring to safeguard the autonomy of Hong Kong.

The protests Hong Kong witnessed in May 2020, were quite similar to the ones the city witnessed almost a year ago when China proposed an extradition law for Hong Kong. The law was eventually scrapped after a flurry of protests. However the protest against the territory’s existing leadership turned into a protest against Chinese ruling party’s efforts to merge Hong Kong with mainland China.

At its core, the protest movement is aimed at protecting Hong Kong’s autonomy and resisting encroachment from the mainland. However, China’s adamant approach in bringing Hong Kong under the mainland amidst a falling economy and rising agitation and police brutality has had a negative impact on the residents.

Many Hong Kong protesters have started moving to countries who are willing to adopt them over fears of being under scrutiny from the Chinese government. Many of the skilled workers are now looking at ways to exit the city and move to better alternatives. More than half of the people from the age group of 18 to 24 are considering options outside of Hong Kong owing to the uncertainty surrounding the region’s fate.

Despite the protest by citizens and condemnation and actions by the US, Britain and other Western countries, it seems unlikely that China is going to halt its efforts to dismantle the autonomy of Hong Kong and effectively merge it with the mainland China.

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