In the energy–momentum density expressions for a relativistic perfect fluid with a bulk motion, one comes across a couple of pressure-dependent terms, which though well known, are to an extent, lacking in their conceptual basis and the ensuing physical interpretation. In the expression for the energy density, the rest mass density along with the kinetic energy density of the fluid constituents due to their random motion, which contributes to the pressure as well, are already included. However, in a fluid with (...) a bulk motion, there are, in addition, a couple of explicit, pressure-dependent terms in the energy–momentum density, whose presence to an extent, is shrouded in mystery, especially from a physical perspective. We show here that one such pressure-dependent term appearing in the energy density, represents the work done by the fluid pressure against the Lorentz contraction during transition from the rest frame of the fluid to another frame in which the fluid has a bulk motion. This applies equally to the electromagnetic energy density of electrically charged systems in motion and explains in a natural manner an apparently paradoxical result that the field energy of a charged capacitor system decreases with an increase in the system velocity. The momentum density includes another pressure-dependent term, that represents an energy flow across the system, due to the opposite signs of work being done by pressure on two opposite sides of the moving fluid. From Maxwell’s stress tensor we demonstrate that in the expression for electromagnetic momentum of an electric charged particle, it is the presence of a similar pressure term, arising from electrical self-repulsion forces in the charged sphere, that yields a natural solution for the notorious, more than a century old but thought by many as still unresolved, 4/3 problem in the electromagnetic mass. (shrink)

It is shown that a newly derived “exact expression” for radiation of an accelerated charge in the recent literature is simply incorrect, having arisen because of a wrong relativistic transformation of the distance parameter. The ensuing claim that the newly derived expression alone satisfies the energy conservation for the electromagnetic radiation, is based on a wrong reasoning where a proper distinction between the time during which the radiation is received and the time for emission (retarded time of the charge) was (...) not maintained. (shrink)

It is shown that the well-known disparity in classical electrodynamics between the power losses calculated from the radiation reaction and that from Larmor’s formula, is succinctly understood when a proper distinction is made between quantities expressed in terms of a “real time” and those expressed in terms of a retarded time. It is explicitly shown that an accelerated charge, taken to be a sphere of vanishingly small radius \, experiences at any time a self-force proportional to the acceleration it had (...) at a time \ earlier, while the rate of work done on the charge is obtained by a scalar product of the self-force with the instantaneous value of its velocity. Now if the retarded value of acceleration is expressed in terms of the present values of acceleration, then we get the rate of work done according to the radiation reaction equation, however if we instead express the present value of velocity in terms of its time-retarded value, then we get back the familiar Larmor’s radiation formula. From this simple relation between the two we show that they differ because Larmor’s formula, in contrast with the radiation reaction, is written not in terms of the real-time values of quantities specifying the charge motion but is instead expressed in terms of the time-retarded values. Moreover, it is explicitly shown that the difference in the two formulas for radiative power loss exactly matches the difference in the temporal rate of the change of energy in the self-fields between the retarded and real times. From this it becomes obvious that the ad hoc introduction of an acceleration-dependent energy term, usually referred to in the prevalent literature as Schott-term, in order to make the two formulas comply with each other, is redundant. (shrink)

We investigate in detail the electromagnetic fields of a uniformly accelerated charge, in order to ascertain whether such a charge does ‘emit’ radiation, especially in view of the Poynting flow computed at large distances and taken as an evidence of radiation emitted by the charge. In this context, certain important aspects of the fields need to be taken into account. First and foremost is the fact that in the case of a uniformly accelerated charge, one cannot ignore the velocity fields. (...) This then leads to other equally vital points. The net field energy turns out to be exactly the same as that of a non-accelerated charge having a uniform velocity equal to the instantaneous velocity of the uniformly accelerated charge. Further, the Poynting vector, seen with respect to the ’present’ location of the uniformly accelerated charge, during the deceleration phase, possesses everywhere a radial component pointing inward toward the charge, becoming nil when the charge becomes momentarily stationary, and during the acceleration phase, points away from the charge position. Last, but not least, when the leading spherical front of the relativistically beamed Poynting flux, advances forward at a large time t to a far-off distance \, the charge too is not lagging far behind. In fact, these relativistically beamed fields, increasingly resemble fields of a charge moving in an inertial frame with a uniform velocity \, with a convective flow of fields in that frame along with the movement of the charge. There is no other Poynting flow in the far-zones that could be termed as radiation emitted by the charge which, in turn, is fully consistent with the absence of radiation reaction and is also fully conversant with the strong principle of equivalence. (shrink)

The essays included in this book break new ground in the philosophy of reason by situating rationality - logical theory, ontology, first philosophy, philosophical hermeneutics - in a global context and tapping the global essence of natural reason. The essays formulate and resolve a fundamental problem in the human condition which has not been adequately dealt with: how discourse between two profoundly different worlds is possible. The formulation and solution of this vital human concern requires the clarification of the universal (...) logos in natural reason - the universal logic which is the common ground between worlds. The essays open the way to the emerging frontier of global reason in expanding the foundations of logic, ontology, hermeneutical practice and the discourse of philosophy in a global context. This calls for a paradigm shift in rational practice from egocentric reason to dialogical or global reason. (shrink)

An important function in all scholarly and academic activities is the participation in the peer review system. One aspect of this peer review evaluation is service on committees judging candidates for important awards, prizes and fellowships. Some reflective observations on this process are made in which a number of factors determining the final choice are identified. It is pointed out that the decisions of such committees are based not only on relevant and objective criteria but are also influenced by a (...) number of irrelevant criteria; caution must be exercised to minimize the effect of the latter factors in order to maintain the highest ethical standards in the selection process. The ranking practices of awards committees, national academies and learned societies are briefly reviewed by pointing out some ethical pitfalls, anecdotal incidents, and the ways to avoid the tarnishing of the selection process. (shrink)

This essay presents central themes from my forthcoming book, The Awakening of the Global Mind. This book seeks to open a new frontier of Global Consciousness that has been long emerging in human evolution through the ages. When we step back from our more localized perspectives and expand into a more integral, holistic, and global space through the awakening of the global mind we are able to discern striking mega-trends in cultural evolution across diverse cultural and religious worldviews and perspectives (...) through time. One striking finding through this global lens is that the collective wisdom of humanity is quite clear that we make our living realities through the conduct of our consciousness: our technology of minding. And when we make ourselves and worlds through egocentric patterns of thinking we get polarized and fragmented worlds that are not sustainable. This essay joins a growing chorus of visionary thinkers and futurists which recognizes that in the 21st Century we face grave planetary crises and that our ego-based cultures are at a tipping point and not sustainable. The primary crisis on the planet now is a crisis of consciousness, and our global wisdom suggests that humanity is in a painful transformation toward a more healthful integral technology of mind that ushers in a new sustainable global civilization wherein the whole human family may flourish together on our sacred planet. (shrink)

The emergence of global first philosophy -- Prologue: Qest for the missing grammar of global logos -- Essays : explorations in global first philosophy -- Overview: Orientation to the essays -- Introduction: Entering the space of global first philosophy -- Essay l: the quest for the universal global science -- Essay 2: logos as the infinite primal word : the global essence of language -- Essay 3: logos and the global mind : the awakening story -- Essay 4: the emergence (...) of logos in classical Greek thought -- Essay 5: logos and the dialogical turn : dialogical awakening in the global evolution of cultures -- Essay 6: the continuing quest for primal knowledge -- Essay 7: logos as the foundation of global ethics : dialogical awakening as the key to global ethics -- Essay 8: meditative reason and the holistic turn to global philosophy prologue -- Essay 9: meditative reason and the missing logic of logos -- Essay 10: logos of Tao : the primal logic of translability -- Essay 11: Nagarjuna and the end of global suffering. (shrink)

_Traces the roots of logos in different cultural milieux._.

This article suggests that we are in the midst of a profound dimensional shift in our rational capacity to process reality, and seeks to articulate the implications of this evolutionary shift to global reason for our scientific enterprise. As we enter the 21st century it is unmistakably clear that we are in the midst of an unprecedented shift in the human condition - a global renaissance that affects every aspect of our cultural lives, our self-understanding, and, of course, our rational (...) enterprise. This evolutionary transformation, when seen through the expanded global lens, has been emerging through the ages on a global scale. In this brief reflection I suggest that this advance in our technology of mind is of an order of magnitude that is so radical and comprehensive that the very concept of a person, of what it means to be human, of our encounter with Reality and all our hermeneutical arts, including the sciences, are likewise taken to a higher global dimension. I suggest that the diverse voices included in this special edition are best situated in the context of this global awakening of reason, scientific knowing, and the holistic worldview. (shrink)

Visual analogy is believed to be important in human problem solving. Yet, there are few computational models of visual analogy. In this paper, we present a preliminary computational model of visual analogy in problem solving. The model is instantiated in a computer program, called Galatea, which uses a language for representing and transferring visual information called Privlan. We describe how the computational model can account for a small slice of a cognitive-historical analysis of Maxwell’s reasoning about electromagnetism.

This book presents a critical and comprehensive biography of Radhakrishnan. The authors explain how Radhakrishnan, who had a British knighthood and an Oxford Professorship, and who did not participate in India’s struggle for freedom, became important in the political life of Independent India. They show how this philosophy professor and vice chancellor often expressed radical views, developed rapport with national leaders, and became President of Indian under Nehru without losing the goodwill and regard of either the British intellectuals or the (...) colonial government of India. It is the thought of Sarvepalli Radhakrishnan that is most often presented in the West as “Hinduism.” Through an analysis of his autobiographical sketches, writings of those who knew him and worked with him, and documents, the authors come to grips with Radhakrishnan’s complex personality which, in spite of his greatness and varied achievements, is all too human. (shrink)

The law of informed consent to medical treatment has recently been extensively overhauled in England. The 2015 Montgomery judgment has done away with the long-held position that the information to be disclosed by doctors when obtaining valid consent from patients should be determined on the basis of what a reasonable body of medical opinion agree ought to be disclosed in the circumstances. The UK Supreme Court concluded that the information that is material to a patient’s decision should instead be judged (...) by reference to a new two-limbed test founded on the notions of the ‘reasonable person’ and the ‘particular patient’. The rationale outlined in Montgomery for this new test of materiality, and academic comment on the ruling’s significance, has focused on the central ethical importance that the law now accords to respect for patient autonomy in the process of obtaining consent from patients. In this paper, we dispute the claim that the new test of materiality articulated in Montgomery equates with respect for autonomy being given primacy in re-shaping the development of the law in this area. We also defend this position, arguing that our revised interpretation of Montgomery’s significance does not equate with a failure by the courts to give due legal consideration to what is owed to patients as autonomous decision-makers in the consent process. Instead, Montgomery correctly implies that doctors are ethically obliged to attend to a number of relevant ethical considerations in framing decisions about consent to treatment, which include subtle interpretations of the values of autonomy and well-being. Doctors should give appropriate consideration to how these values are fleshed out and balanced in context in order to specify precisely what information ought to be disclosed to a patient as a requirement of obtaining consent, and as a core component of shared decision-making within medical encounters more generally. (shrink)

The ontological model framework for an operational theory has generated much interest in recent years. The debate concerning reality of quantum states has been made more precise in this framework. With the introduction of generalized notion of contextuality in this framework, it has been shown that completely mixed state of a qubit is preparation contextual. Interestingly, this new idea of preparation contextuality has been used to demonstrate nonlocality of some \(\psi \) -epistemic models without any use of Bell’s inequality. In (...) particular, nonlocality of a non maximally \(\psi \) -epistemic model has been demonstrated from preparation contextuality of a maximally mixed qubit and Schrödinger’s steerability of the maximally entangled state of two qubits (Leifer and Maroney, Phys Rev Lett 110:120401, 2013). In this paper, we, show that any mixed state is preparation contextual. We, then, show that nonlocality of any bipartite pure entangled state, with Schmidt rank two, follows from preparation contextuality and steerability provided we impose certain condition on the epistemicity of the underlying ontological model. More interestingly, if the pure entangled state is of Schmidt rank greater than two, its nonlocality follows without any further condition on the epistemicity. Thus our result establishes a stronger connection between nonlocality and preparation contextuality by revealing nonlocality of any bipartite pure entangled states without any use of Bell-type inequality. (shrink)

This volume brings together essays that discuss and contextualise Gandhi's ideas on pluralism, religious identity, non-violence, satyagraha, and modernity. It interrogates the epistemic foundations of Gandhian thinking and weltanschauung, identifies diverse strands within his arguments, and gives it new meaning in contemporary society. This book focuses on Gandhi's engagements with religious, political, and social conflicts; his reflections on faith and modernity; and his argumentative dialogues with Mohammad Ali Jinnah and B. R. Ambedkar. It provides critical insights into Gandhi's philosophy and (...) suggests ways of engaging with his ethical and moral ideas in contemporary intellectual and political discourse. Comparing and contrasting Gandhian thought and strategies with contemporary issues and conceptions of religious freedom, conflict resolution, and liberalism, the volume reformulates and reconstitutes his intellectual and political legacy. This book points to new and possible future directions of research on Gandhian concepts and will be useful for scholars in the fields of political science, Gandhian studies, sociology, and philosophy. (shrink)

In recent years, multivariate pattern analysis has been hugely beneficial for cognitive neuroscience by making new experiment designs possible and by increasing the inferential power of functional magnetic resonance imaging, electroencephalography, and other neuroimaging methodologies. In a similar time frame, “deep learning” has produced a parallel revolution in the field of machine learning and has been employed across a wide variety of applications. Traditional MVPA also uses a form of machine learning, but most commonly with much simpler techniques based on (...) linear calculations; a number of studies have applied deep learning techniques to neuroimaging data, but we believe that those have barely scratched the surface of the potential deep learning holds for the field. In this paper, we provide a brief introduction to deep learning for those new to the technique, explore the logistical pros and cons of using deep learning to analyze neuroimaging data – which we term “deep MVPA,” or dMVPA – and introduce a new software toolbox intended to facilitate dMVPA for neuroscientists everywhere. (shrink)

Professor k. Satchidananda Murty, one of modern India’s leading philosophers, passed away in his native village of Sangamjagarlamudi in Andhra Pradesh in 2011, after a stellar career during which he advanced knowledge rather than opinion. The Indian Philosophical community, and especially Ashok Vohra, is to be congratulated for producing a dynamic engagement with philosophy. I had known Murty for more than twenty years. I interacted with him several times. When I once asked him where he stood philosophically, he was (...) candid enough to say that he ‘Oscillates between Sankar and Ramanuja’. The essays in this book amply demonstrate that he was a man of many parts but as the allusion to his mystical experiences in his book The Realm of Between reveals, he was also more than the sum of his parts; that while willing to transcend the limits of reason when required. Thus ‘revelation and reason’ characterize not just the title of one of his famous books but in a sense, his life, and this fact renders this collection uniquely relevant for our times. I therefore enthusiastically recommend this book not only to all those interested in the philosophy of Professor Murty, or in Indian Philosophy, or in philosophy in general but to all those interested in contemporary philosophy in the broadest sense. (shrink)

K. Satchidananda Murty (1924-2011) was a vociferous writer and an iconoclast. This volume is a collection of his unpublished writings It presents Murty's unpublished keynote addresses, papers presented in seminars, and lectures which show his reflections and arguments in contrast to contemporary philosophers with regard to recent developments in philosophy. The writings reveal Murty's rejection of established theories by well-known eastern and western philosophers, as well as his arguments in their support, and present a new interpretation of their contention in (...) the contemporary idiom. Murty critically evaluates the contemporary arguments of Malcolm, James Ross, Alvin Plantinga, Charles Hawthorne, Jean-Paul Sartre, Anthony Flew, E.H. Madden, and P.H. Hare. An important contribution, the book assesses K. Satchidananda Murty's contribution to philosophy during sixty-one years of his engagement with active writing and teaching. It will be of great interest to scholars, teachers, and students of Indian philosophy, Hindu philosophy, Vedāntic philosophy, Advaita Vedānta, comparative philosophy, religious studies, and South Asian studies. (shrink)

Contributed articles presented at a seminar held on Oct. 1992.

Bhattacharya, K.C. Swaraj in ideas.--Seal, B. The neo-romantic movement in literature.--Tagore, R. The religion of an artist.--Sri Aurobindo. The ideal spirit of poetry.

Mohanty, J. N. Kalidas Bhattacharyya as a metaphysician.--Deutsch, E. On meaning.--Potter, K. Towards a conceptual scheme for Indian epistemologies.--Ganguly, S. N. Rationality versus reasonableness (freedom: a reinterpretation).--Sen, P. K. A sketch of a theory of properties and relations.--Mohanty, J. N. Perceptual consciousness.--Chattopadhyaya, D. P. Theory and practice.--Bhadra, M. K. The idea of self as purpose, an existential analysis.--Matilal, B. K. Saptabhaṅgī.--Banerjee, H. The identification of mental states and the possibility of freedom.--Chatterjee, M. A phenomenological approach to the self.--Banerjee, S. P. (...) Alienation and freedom.--Sinha, D. Cognitive language in Shahrukh. (shrink)

The anthology Dharma: The Categorial ImperativeThe choice of using ‘the categorial imperative’ over the standard ‘the categorical imperative’ has not been supported with reason in the anthology, notwithstanding its mentioning of Kant. consists of a brief introduction and 18 essays which were presented in an international conference of the same title in 1997, with the purpose to provide an alternative interpretation of the concept ‘dharma’ while taking into view the influence of Western notion of religion and treating it as an (...) epistemological , and not as a moral, concept. Here, dharma has been understood as a category, as an intellectual exercise, for ‘viewing’ Indian reality.The fundamental question is this: what constitutes the concept of dharma in the context of our changing forms of life? I.e., What aspects of dharma upon which Western influence are to be noted? Some aspects of the constitutive elements of dharma, as identified by the contributors of .. (shrink)