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This is a compilation of three dissertations based on experimental projects by final year undergraduate students of Jhargram Raj College, Jhargram-721507, West Bengal, India. The topics embody a detailed idea of Wheatstones Bridge as a basic tool for electrical circuit networks, its different applications in direct and alternating circuits, some new experiments based on it. The first and second chapter gives ideas of Wheatstones Bridge and different types it. The third chapter determines variation of low resistance of manganin wire with the help of Kelvin double Bridge. In the...

The study on defect and diffusion is an important area due to its present status in technology and so this book has its relevance still now. From the theoretical point of view Lattice Statics and Atomistic Continual Models in chapter one have produced, with all their approximations, some interesting and quite consistent results for relaxations due to a vacancy, its formation energies and divacancy binding energy in some FCC metals. Pseudopotential approach of chapter two produces general formulations for the calculation of defect parameters in case of vacancy in FCC metals for self and...

This book compiles three dissertations on experimental projects based on pollution hazards due to electric field on the germination of seeds. The sprout length of gram and pea seeds during the time of germination of some seeds in open-air condition decreases with increase in electric field and voltage. Corresponding graphs show non-linear variations. The cut-off or threshold voltage at which germination stops, is also determined by extrapolation and the corresponding electric field is computed. Thus electric field has negative effect on the germination of seeds. This may have an impact in...