Harmonic Oscillator – Relativistic Correction
In this post, I will use the stationary(time-independent) first order perturbation theory, to find out the relativistic correction to the Energy of the…
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Parsing Celebrity Birthdays from Wikipedia using Jsoup – Android
I recently discovered this Html parsing library called Jsoup. It is open source and extremely powerful. To get a hang of it I…
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Parsing the first paragraph of Wikipedia articles using Jsoup- Android Development
For one of the apps that I was developing recently, I needed some information on the elements of the periodic table. Now Wikipedia…
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Periodic Table elements Electronic Shell Configuration Diagrams/Figures
I recently parsed the Wikimedia for the electronic shell diagrams of the elements of the periodic table, for an app that I was…
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Velocity of Sound in Air – Viva Questions
The following are a few commonly asked questions for the experiment, where you measure the speed of sound using CRO. What are the…
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Hellman-Feynman Theorem and its Applications – Quantum Mechanics
Hellman-Feynman Theorem investigates how the energy of a system varies as the Hamiltonian varies. If a system is characterised by a Hamiltonian that…
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Expectation Value of 1/r for Hydrogen using Virial Theorem -Quantum Mechanics
In this post we will be evaluating the expectation value of 1/r : using the Virial Theorem, that we proved and talked about…
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Polynomial Fitting – JAVA Code/Program (works on Android as well)
Okay, so the following is a code for fitting a polynomial to a given set of data using the Least Squares Approximation Method(Wikipedia). Formula…
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C++ Program for Determinant of a Matrix using Gauss Elimination
So I wrote a code for Gaussian Elimination to solve a system of linear equations a while ago. But recently learned that it…
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How to add Data to GraphView from Arrays? [SOLVED] – Android Studio
Thanks to the amazing library by jjoe, you can plot graphs easily using GraphView. The documentation provided is really helpful. However, some users…
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