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  1. Derivative of the Volume of a Cone - Physics Forums

    Nov 25, 2007 · The discussion revolves around finding the derivative of the volume of a cone, specifically in the context of related rates problems in calculus. Participants explore the implications …

  2. Telecommunication engineer • Physics Forums

    Feb 2, 2026 · Quantum interested in and telecommunication electronics

  3. What Exactly is Dirac's Delta Function? - Physics Forums

    Aug 29, 2025 · In Dirac's Principles of Quantum Mechanics published in 1930 he introduced a "convenient notation" he referred to as a "delta function" which he treated as a continuum analog to …

  4. Suanpan & Soroban: History, Design, and Usage Guide

    Jan 19, 2019 · Introduction Overview Abacuses are commonly seen in ancient civilizations around the world as a convenient tool for simple calculations. In this article we focus on the traditional Chinese …

  5. Wordle Lovers - Play the NYT Daily Game - Physics Forums

    Feb 14, 2026 · This thread centers around the daily Wordle game from the New York Times, where participants share their results, strategies, and experiences. The discussion includes personal …

  6. Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones

    Feb 15, 2026 · Hi. I have a wooden organ pipe with removable stopper and wanted to confirm the theoretically predicted spectra using a smartphone app. The formulae for the fundamental …

  7. What is the Unit 'a.u.' and How to Convert it to SI? - Physics Forums

    Jan 14, 2009 · The discussion centers around the meaning of the unit "a.u." as encountered in graphs representing the unit of |E|^2, where E denotes the electromagnetic field. Participants explore its …

  8. Mathematical Prep for Physics Majors — Essential Guide

    May 11, 2015 · It has often been said that a physics major sometime needs more mathematics than even a mathematics major. Let's find out if that is true!

  9. Thrust Bearings and Smooth Journal Bearings reaction moment?

    Sep 6, 2017 · The discussion revolves around the presence of reaction moments in thrust bearings and smooth journal bearings, as referenced in R. C. Hibbeler's textbook on Mechanics of Materials. …

  10. What Does Azimuthal Symmetry Mean in Physics? - Physics Forums

    Oct 25, 2014 · Azimuthal symmetry in physics refers to a system's invariance under rotation around a specific axis, typically the z-axis. This concept is defined mathematically by the condition m=0, …