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 …
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 …
Light & Time • Physics Forums
Aug 23, 2023 · Not a great question but I heard someone say that time does not move for a photon. T=0. So therefore both its Emission &Absorption are simultaneous events. I say no. If both of these …
Too Much Indicator in Titration: Causes & Solutions
Jan 18, 2011 · The discussion revolves around the effects of adding too much indicator during a titration of a base with an acid. Participants explore whether this constitutes a possible error, how it might …
Are Maxwell's equations linearly dependent? • Physics Forums
May 15, 2024 · The discussion centers on the linear dependence of Maxwell's equations in their microscopic or vacuum formulation. Participants explore the implications of the equations in terms of …
Feynman's bug (hot plate) in generality • Physics Forums
Aug 10, 2021 · A textbook (in German language: Sexl-Urbantke, Gravitation und Kosmologie) says that intrinsic curvature of spacetime is a definition. The alternative is to postulate a flat spacetime …
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. …
Is a Cusp Considered an Inflection Point in Calculus?
Mar 23, 2011 · is a point only considered an inflection point if a tangent (whether vertical or not) exists or just whether just that f(c) is continuous suffices. For instance, is a cusp/corner point eligible for being …
What Is the Longest and Most Complex Chemical Equation Known?
Nov 19, 2003 · The discussion revolves around identifying the longest and most complex chemical equations known, with participants exploring various interpretations of what constitutes a "tough" …
Ice Quiz: All About Ice Trivia - Physics Forums
Dec 21, 2015 · Winter is coming. First day of Winter is December 22nd. Time to learn a bit about a substance that the northern regions will encounter.