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 4:43 PM

The US-Taliban Deal: A ray of hope for the battered Afghans

On 11 September 2001, the attacks on the World Trade Centre and Pentagon in America killed over 3000 people for which Osama Bin Laden, the head of Al-Qaeda, claimed responsibility.. Osama Bin Laden was based in Afghanistan during this attack and was protected by the government of the day which was run by the radical Islamist group Taliban. Even after the repeated demands from the USA government, Taliban refused to hand over Osama bin Laden to the USA. 

George W. Bush, the president of America at that point of time, announced the first airstrikes against Afghanistan on 7 October 2001. As other countries joined in, the Taliban were quickly removed from power and a new pro-western government was installed. The new government, however, was never able to run its writ over the whole country. The Taliban regrouped and started gaining influence in the vast rural areas and continuously attacked the US-led international military coalition as well as Afghan forces. From that point onward, the U.S. and its allies have battled to stop Afghanistan's administration crumbling and to end attacks by the Taliban. 

After more than eighteen years of war in Afghanistan, on 29 February 2020, the United States and Taliban signed a peace deal which was the first step in ending the war. The agreement was signed in the Qatari capital Doha between Talibani political chief Mullah Abdul Ghani Baradar and U.S. special envoy Zalmay Khalilzad. The U.S. Defence Secretary Mark Esper said that signing of the accord would be a good step to end the war, the road ahead would not be secure. There would be a full withdrawal of all U.S. and coalition forces from Afghanistan within 14 months since the signing of the deal. The Taliban promised to cut ties with Al Qaeda and keep fighting the militant Islamic State group.  

What is in the peace agreement?

The peace agreement was signed after nine rounds of discussion and it contains four main points: cease-fire, withdrawal of foreign forces, intra-Afghan negotiations, and counter-terrorism assurances. 

  1. Cease-fire: The negotiators agreed to a temporary reduction in violence. They said that a permanent and comprehensive cease-fire will be an item on the agenda of the intra-Afghan dialogue and negotiations. 
  2. Withdrawal of foreign forces: Within the first 135 days, the U.S. will reduce its troops in Afghanistan from roughly 12,000 to 8,600, along with the allies of the U.S. also withdrawing their forces proportionately. If the Taliban follows through all the commitments that in the peace deal, all the U.S. troops along with the allies' troops will leave Afghanistan within fourteen months. 
  3. Counter-terrorism assurances: The United States invaded Afghanistan after the 9/11 attacks, mainly to eliminate the threat of terrorism and halt terrorist activities in the country. As a part of the agreement, the Taliban guaranteed that Afghanistan would not be used by any of its members or terrorist groups to threaten the security of the U.S. and its allies. 
  4. Intra-Afghan negotiations: The reason behind the intra-Afghan talks is to bring together negotiators from the Taliban and Afghan government. The peace deal also calls for an exchange of prisoners before the intra-Afghan negotiations. The intra-Afghan talks which were supposed to take place in March 2020, have been delayed. 

Challenges to the peace deal

While this deal can be seen as a stepping stone towards a more comprehensive agreement, many difficulties may come in the way. 

The United States and the Taliban had consented to the arrival of up to 5000 Taliban prisoners in return for up to one thousand Afghan security forces. However, the Afghan government said that it had not agreed on such an exchange. The process can become difficult due to a weak central government along with ethnic, tribal and sectarian differences. At the same time, many people say that the Taliban has gotten more than it gave up. 

Through the deal, the Taliban got their primary wish: removal of American troops from Afghanistan. Yet, they had failed to be specific about the civil rights that they had repressed when they were in power. The insurgents pledged to keep international terrorist groups like Al Qaeda from using Afghanistan as their base for attacks. 

The United States promised to work towards the gradual removal of Taliban leaders from the sanction blacklists of America and the United Nations. At the same time, the experts say that the Taliban is stronger than ever at this point. It controls many districts throughout the country and continues to launch significant attacks including in Kabul and on Afghan security forces. 

The peace process is also faced by the problem of the illegal drug trade. According to Afghan officials, more than 20 terrorist groups still operate inside the country, which is another threat to the deal. By signing the agreement, the U.S. and the Taliban state their commitment to reduce violence and not attack each other. What remains a worry is how much and how long the Taliban will hold fire on Afghan security forces before the cease-fire is finally reached in Afghan negotiations.

Sources that were used:

  1. https://www.nytimes.com/2020/02/29/world/asia/us-taliban-deal.html
  2. http://diplomatist.com/2020/05/16/us-taliban-peace-deal-and-its-implications-for-central-asia/
  3. https://www.aljazeera.com/indepth/interactive/2020/02/war-afghanistan-2001-invasion-2020-taliban-deal-200229142658305.html
  4. https://www.bbc.com/news/world-asia-51689443
  5. https://www.dawn.com/news/1529415
  6. https://www.cfr.org/backgrounder/us-taliban-peace-deal-agreement-afghanistan-war
  7. https://www.aljazeera.com/news/2020/02/afghanistan-taliban-sign-deal-america-longest-war-200213063412531.html
  8. https://www.dawn.com/news/1537384
  9. https://www.washingtonpost.com/context/u-s-taliban-peace-deal/7aab0f58-dd5c-430d-9557-1b6672d889c3/?itid=lk_inline_manual_3
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