We present Helmholtz's argument against Weber's electrodynamics. It is related with a fixed charged nonconducting spherical shell and a charged particle moving inside it. Then we utilize Weber's electrodynamics plus Schrödinger's expression for gravitational interactions in order to obtain the equation of motion and to study this situation. We show that this approach avoids the problems pointed out by Helmholtz. Moreover, it indicates that the effective inertial mass of the charged particle will depend not only on the electrostatic potential of (...) the shell but also on its velocity. This is a relevant aspect of Weber's theory. (shrink)

It is easy to have about the temporal present, the time that is now, thoughts that seem both true and impossible. E.g., ‘Now is the time that matters'. We may reflect that this is not just true but that ‘it is always like that', that is: now is always the time that matters. Yet here we seem to be generalizing the ascription to the temporal present of a property that claims uniqueness, viz., being the time that matters. The present paper (...) explores, in the case of the temporal present, the meaning and implications of this kind of impossible generalisation. (shrink)

In this paper I shall deal with a new form of Optimism. Rationalists once believed that it was mistaken to suppose that a world without God is a meaningless one; material progress along with the improvement of men and their institutions, indefinitely protracted, ensured that life was meaningful. More recently it has become fashionable to claim that the pessimist, the cosmic mourner, is not mistaken at all, but rather incoherent. It is not that there is no answer to his question (...) but rather that no sensible question has been asked—at least in the terms in which he poses it. The latter qualification is necessary, for no one is denying that people's lives may either possess or lack meaning. Rather what is being denied is that life as a whole, tout court and without limitation, can be said either to have or not to have sense. One cannot, it is argued, regret what could not, logically, be otherwise, and since nothing could possibly count as endowing the cosmos as a whole with meaning it is not logically possible for the cosmos as a whole to have, or not to have, meaning. The regret evinced by the pessimist becomes, therefore, a pseudo-regret. ‘… it is perverse writes Ayer, ‘to see tragedy in what could not conceivably be otherwise.’ Just as a pseudo-problem is one for which there could, logically, be no solution, so a pseudo-regret is one in which there can be no assuagement of the regretted situation. None of this is to deny, of course, that a man can experience a state of mind which might be described as ‘cosmic anguish’, but such an experience has no cognitive value: it is a state of mind, no doubt painful for the possessor, which tells us nothing about the world beyond it. That people have confused this state of mind with a judgement about the world is understandable, but mistaken. (shrink)