Hello, this is Saurish Chakrabarty. I am a physicist and teach at Acharya Prafulla Chandra College. Welcome to my webpage. Below are links to some of my recent posts. Some information about me and my teaching and research interests can be found in the links below the header.
Consider a tetrahedral volume element as shown in the figure below. It has three orthogonal faces areas $dA_1$, $dA_2$, and $dA_3$, and with normals $\hat{a}$, $\hat{c}$ and $\hat{g}$, respectively. (The symbols for the unit normals were chosen because I could not find a quick and easy way to write $\hat{b}$ while creating this figure. You can c... Read more 16 Nov 2023 - 2 minute read
Syllabus Lagrangian formulation of acoustic field in gases Hamiltonian formulation for continuous systems Canonical equations from a variational principle Poisson’s brackets and canonical field variables Basic Introduction In the first part of the course on classical mechanics, you have mainly studied problems where the focus is on a ... Read more 11 Oct 2023 - less than 1 minute read
Digital versus Analog In analog circuits, the inputs and outputs can take a continuous range of values. In digital circuits, the inputs and outputs can be in two possible states, interpreted as {0, 1} or {on, off} or {true, false}. Note: In general, if a variable, $x$, can take one of two different values, say, $a$ and $b$, then, it can be line... Read more 29 Sep 2023 - 2 minute read
Difference between Analog and Digital Circuits Binary Numbers: Decimal to Binary and Binary to Decimal Conversion AND, OR and NOT Gates (Realization using Diodes and Transistor) NAND and NOR Gates as Universal Gates XOR and XNOR Gates De Morgan’s Theorems Boolean Laws Simplification of Logic Circuit using Boolean Algebra Funda... Read more 28 Sep 2023 - less than 1 minute read
Distinction between Solids and Fluids When we interact with a solid (apply a force on it), it bends (deforms/changes shape) – the amount of deformation depends on the force. When we apply a force on a fluid, it flows – its deformation increases with time. Definition A fluid is a material in which small (suitably chosen) forces can change the re... Read more 25 Aug 2023 - 5 minute read