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 4:50 PM

What is at stake when an Arctic town hit record high temperature

The Russian Arctic region of Siberia has front row tickets to an approaching climate change rollercoaster ride as it experiences soaring temperatures.

The mercury climbed to 38⁰C (100.4F) in Verkhoyansk, Siberia in June 2020 creating the new record of highest temperature in the arctic region and beating Fort Yukon, Alaska, which recorded 37.8⁰C in June 1915. The forecast for the coming weeks was also a whopping 10⁰C higher than last year. This region is also known for experiencing the coldest temperatures, reaching as low as minus 60⁰C during winters.

Concerned scientists claim that the Arctic is heating with double the speed of global average. “Such heat-waves aren't necessarily new to Siberia, but that climate change is increasing their severity and length,” says Sergei Semyonov of the Yu. A. Izrael Institute of Global Climate and Ecology in Moscow.

The heat waves are occurring due to a ‘heat dome’ effect in the Arctic region. This phenomenon happens when the Air is pushed and compressed, creating a very high mass of air into one location. This heavy air prevents clouds from forming, keeping the weather sunny, and pushes warm temperatures down to the surface which creates a virtual dome in which heat is trapped for a long duration.

This has led to devastating consequences for the environment of the arctic region. The forest areas of Sakha Republic, Russian Federation are witnessing rampant Wildfires. In Siberia, a major diesel oil spill incident happened due to the melting of Permafrost and caused contamination in the Ambarnaya River.

Permafrost serves as a foundation for almost the entire Northern Hemisphere’s landmass and is also responsible for trapping twice the amount of carbon found in the atmosphere. This is a cause of concern, not only for the Arctic, but for the entire globe as it would amount to release of more carbon dioxide in the atmosphere.

Global warming is further fuelling the increase in temperatures of the frigid regions. May 2020 was reportedly the warmest month, according to the climate report of Copernicus Climate Change Service. As a result, snow in these areas melted earlier than it was supposed to. In 2012 as well, around 97% of the ice sheets in Greenland turned to slush due to extensive warming and in 2016, the warm climate in Norway resulted in rainfall instead of snowfall.

From these observations, it would be fitting to state that our planet is undergoing ‘Polar Amplification’, meaning, quicker warming of the poles. Snow cover helps in reflecting the sunlight back in the atmosphere. However, with the gradual warming of Earth, the amount of snow is declining and more heat is being captured instead of being reflected. Melting of snow and icy bodies contributes to sea level rise, increasing the probability of floods in low lying coastal areas.

These events are indicative of the degrading health of our planet which to a large extent are caused by our reckless actions. If we persist with business as usual, the survival of the human race may be as endangered as that of the Siberian tigers.

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