Quantum Mechanics Simplified (I hope)

The idea of writing this post arose during a brief exchange with Llewelyn Morgan – an Oxford classicist whom I follow on Twitter. Llewelyn was responding to an interesting piece in Quanta mag on a classical fluid physics experimental analogy of the famous De Broglie-Bohm interpretation of Quantum Mechanics, and remarked that he found the topic abstruse. I think it is a fair comment, but attributable more to a lack of clarity around the general field of quantum mechanics (in part a reflection of the confusion within the community of physicists themselves) than to some innate difficulty in understanding the basic details of QM itself. So my post is an attempt to explain QM to the lay reader.

Note that this post has literally nothing to do with anything remotely brown or even brownish. So people who read this blog for cultural commentary or South Asian history etc may stop right here.

Also a general note to physicists reading this: in my description of the problem (specifically tangential references to mathematical details) I may introduce some simplification in language. Don’t get unnecessarily triggered by this for you are not the intended audience 🙂

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Judges Dredd

What is the point of judiciary in a modern functioning constitutional democracy? Are they merely the rottweilers of the Constitution – loyal protectors of the Law shepherding the citizen flock? Are they the ultimate arbiters of legal (and moral) good? Or activists who can break new ground and set new precedents where angels fear to tread?

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The Kashmiri who failed India

This is the abridged version – based on Auriel Stein’s reading – of the early verses of book VII of Kalhana’s Rajatarangini with some supplementary commentary/detail enrichment. The referenced text describes the fated final battle between Mahmud of Ghazni and the (Hindu) Shahis of Udhbandhapura (modern day Hund, in the Swabi district of Khyber-Pakhtunkhwa) under Trilochanapal from the Kashmiri POV. Kashmiri feudals played a major role in this battle, and one of their own, Tunga, a Khakha Rajput from Poonch was specifically responsible for losing the initiative and the battle. This resulted in the complete destruction of the Shahis and ultimately opened the way for Ghaznavid (and many more) Turkic incursions into India proper.

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