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7)Sheikh Hasina the right choice as primary guest to the Republic Moment but trust the PMO to miss the obvious

India Republic Day -- From a record 10 Chief Friends for the Republic Day Ornement in 2018 to non-e in 2021 is as a lot a reflection on Prime Minister Narendra Modis out of the box approach to foreign policy. Coming from a record 10 Chief Friends for the Republic Day Ornement in 2018 to non-e in 2021 is as a lot a reflection on Prime Minister Narendra Modis out of the box approach to foreign policy as his blind spots although zeroing in on an astonishing foreign dignitary. Sheikh Hasina Prime Minister of Bangladesh would have been the perfect Republic Day Chief Guest this season for umpteen reasons but it obviously didnt occur to Modi to single her out there for the honour. I shiver to even speculate if the visionary and statesman like Modi is blinded simply by her religion or sex or both to pass the girl up? Instead of inviting United kingdom PM Boris Johnson who else ultimately chickened out Hasina should have been Modis programmed choice this year as it is the actual 50th anni...
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Angular momentum in quantum mechanics

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Angular momentum in quantum mechanics differs in many profound respects from angular momentum in classical mechanics. In relativistic quantum mechanics, it differs even more, in which the above relativistic definition becomes a tensorial operator. Spin, orbital, and total angular momentum edit The classical definition of angular momentum as L = r × p {\displaystyle \mathbf {L} =\mathbf {r} \times \mathbf {p} } can be carried over to quantum mechanics, by reinterpreting r as the quantum position operator and p as the quantum momentum operator. L is then an operator, specifically called the orbital angular momentum operator . The components of the angular momentum operator satisfy the commutation relations of the Lie algebra so(3). Indeed, these operators are precisely the infinitesimal action of the rotation group on the quantum Hilbert space. (See also the discussion below of the angular momentum operators as the generators of rotations.) However, in quantum physi...
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History

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Newton, in the Principia , hinted at angular momentum in his examples of the First Law of Motion, A top, whose parts by their cohesion are perpetually drawn aside from rectilinear motions, does not cease its rotation, otherwise than as it is retarded by the air. The greater bodies of the planets and comets, meeting with less resistance in more free spaces, preserve their motions both progressive and circular for a much longer time. He did not further investigate angular momentum directly in the Principia , From such kind of reflexions also sometimes arise the circular motions of bodies about their own centres. But these are cases which I do not consider in what follows; and it would be too tedious to demonstrate every particular that relates to this subject. However, his geometric proof of the law of areas is an outstanding example of Newton's genius, and indirectly proves angular momentum conservation in the case of a central force. The Law of Areas edit Newton's derivation ed...
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