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

Publication Date

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 4:47 PM

Kitchen Garden: An unusual arsenal in Kenya’s fight against malnutrition

Vegetable gardens have been in vogue since long across the world as a hobby to source  some fresh vegetables for household consumption. However in Kenya, the government and citizens both have moved towards taking it to the next level.

Hassani Oyo, a musician and resident of Nairobi, Kenya, has started vertical bag gardening in the backyard of his home to grow exotic vegetables like cabbage, spinach and kale for his own use as well as for sales to his neighbours and local vegetable vendors. This low cost method of gardening uses minimal farming space and very less water.

Another gardening story emerges from Busia County in western Kenya. where a local community-based organization, Sustainable Income Generating Investment (SINGI) is promoting the use of Kitchen Gardens. SINGI in partnership with other organizations are actively involved in training farmer groups about healthy agricultural practices and sharpening their production skills.

Roselida Orodi, the chairperson of Esikoma Ushirika Farmers Self Help Group states that, “Most households produce enough vegetables for domestic consumption with a surplus which is usually sold to the local market and beyond”. The biggest advantage is that these vegetables are able to withstand high temperatures. During summer, when the demand increases, they are usually sold for higher prices to earn good profits.

Jessica Muhonje of Singingire vegetable farmers group, says that she sells vegetables worth 15 U.S dollars per day. With indigenous vegetables gaining popularity, she adds that, “People flock to my homestead to purchase the vegetables”.

Kenyan government has also launched the “One Million Kitchen Gardens Plan” for households across the country. Brainchild of Agriculture Chief Administrative Secretary, Anne Nyaga, the program aims to use kitchen gardens as a tool to achieve food security, fight malnutrition, and to deal with the food crisis caused by the Covid-19 pandemic. In the initial phase kitchen garden kits were provided to 15,000 households of  Makueni county. “We would like to put emphasis on a balanced diet through these kits so that we can be able to boost our immunity and create an immunity that is able to fight COVID-19 and other diseases” says Anne Nyaga. She also adds, “The government is launching a campaign to establish kitchen vegetable gardens, we have issued guidelines to support both rural and urban dwellers with technologies for setting up within the resources available”.

These success stories inspire many others to join the kitchen garden bandwagon in Kenya. Setting up a kitchen garden is not tough, according to Mr. Oscar Ludelu, a landscaper and horticulturist. However, a few factors, like cost and what type of garden one needs is to be kept in mind before starting a kitchen garden.

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