Abstract
In present times, Science has become more and more contiguous to philosophy due to the advent of Relativity theory and Quantum Mechanics. Relativity has modified our concepts of mass, length, force, law of addition of velocities and simultaneity and has given a new interpretation of the laws of conservation of energy and momentum. It has demonstrated the inner necessity of the idea of dialectic contradiction in the theoretical development of the contents of physics. Quantum Mechanics has continued what began with the theory of relativity. It rejects unlimited detailing of objects in space and of phenomena in time. The concept of energy, momentum and angular momentum have now to take into account the possibility of quantization and the limitations imposed by the uncertainty relations. It has shown that the basic laws of nature are statistical and that the probabilistic form of causality is the fundamental form. It lays emphasis on relations of qualitatively different dialectic types, like the relations of complementarity and relations of interference. In the article, an attempt is made to show that these theories have called for a drastic revision of the seminal kernels of the traditional philosophy of science.