Of the three different types of dualism viz., wave-particle, mass-energy and matter-wave of de Broglie, the mass-energy dualism in which the rest mass showing conversion to mechanical energy is dependent on the velocity of the particle. The other two i.e., wave-particle and matter-wave have identical basis for the dual exposition of property. The fundamental property which causes the dualism in them arises from two components. These are exhibited in different perspectives by the study of electromagnetic wave — one guided by wave and the other by quantum mechanics. They are independent but supplementary to each other. This connects Astrophysics, Astronomy, Nuclear Physics, Atomic Physics, Special Theory of Relativity, Gravitation and Gravity, Quantum Theory of Gravity etc. with apparently diverse and contradictory properties. The result shows correct interpretation of neutron-proton conversion in the nucleus through d- and u- quark exchange and is the source of perpetuity in magnetic forces. Mechanism of low and high temperature superconductivity has been examined that led to the explanation of the mystery of Bermuda Triangle. Keywords: Basis of wave-particle duality, Real source of exchange energy, Source of perpetuity of magnetic forces, Mechanism of low and high temperature superconductivity