If mercury is cooled below 4.1 K, it loses all electric resistance. This discovery of superconductivity by H. Kammerlingh Onnes in 1911 was followed by the observation of other metals which exhibit zero resistivity below a certain critical temperature. The fact that the resistance is zero has been demonstrated by sustaining currents in superconducting lead rings for many years with no measurable reduction. An induced current in an ordinary metal ring would decay rapidly from the dissipation of ordinary resistance, but superconducting rings had exhibited a decay constant of over a billion years!One of the properties of a superconductor is that it will exclude magnetic fields, a phenomenon called the Meissner effect.The disappearance of electrical resistivity was modeled in terms of electron pairing in the crystal lattice by John Bardeen, Leon Cooper, and Robert Schrieffer in what is commonly called the BCS theory. A new era in the study of superconductivity began in 1986 with the discovery of high critical temperature superconductors.
Title Establish Multiplication, quotient and power law of indices Idea to do the project Take at least ten different number sets and calculation techniques to establish the law of indices Such as 2²× 2³= 2x2x2x2x2= 2⁵ Your project work must have Identification of problem Work division Planning Calculation Finding Conclusion You must make a PowerPoint file. Mode of submission will be given later. Your project work must include Introduction ( introduction to indices, and brief about law of indices) Planning or tools ( identification of problem, methods to be used, execution and conclusions) Calculation. If you want to verify multiplication law, You can take few mathematical calculations You can summarize the calculation in table to demonstrate the results. You can design the table as per your idea and understanding
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