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 …

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 …

6 days ago · Dis an Apple Dis a (p)pear: The thread centers around sharing and enjoying lame jokes, with participants contributing various humorous quips and puns. The discussion explores the nature …

Feb 8, 2016 · Eukaryote evolution and cellular complexity Historically, life is categorized into three broad domains: bacteria, archaea, and eukaryota. Whereas bacteria and archaea are almost all relatively …

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 …

Jan 11, 2025 · Time travel is logically possible. IF you moved faster than light or even a little less with time-dilation taking effect you live on another timeline. It is not synchronized with those on …

Jan 19, 2019 · Introduction 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 and …

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 …

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. …

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 …