Retiree • Physics Forums
Feb 27, 2026 · I was a bold teenager who had flashes of insight. I am now a retired mathematician who is not as fast but still original.
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 …
Higher magnification calibration slide • Physics Forums
Mar 23, 2026 · I thought the graticule was placed in the eyepiece so is not subject to the full magnification?
Do torque values equal compression - Physics Forums
Jul 1, 2016 · The discussion revolves around the relationship between torque values and compressive force when using a vise to apply force to a stack of parts. Participants explore various methods for …
Just a student! - Physics Forums
Mar 13, 2026 · I'm Gab, a Canadian university student pursuing a Computer Systems Engineering Bachelor's. You may address me in Français, English, Español or हिंदी (these are ordered in …
Can it be called a model if a sentence doesn't hold in it?
Mar 16, 2026 · Consider this example: It seems that it is incorrect to call ##M_2## a model. Shouldn't it rather be called a structure?
Why Does the Pink Color in a Titration Fade Over Time?
Jan 31, 2005 · The discussion revolves around the fading of the pink color produced by phenolphthalein during a titration over time. Participants explore various chemical processes and factors that may …
Optics Forum • Physics Forums
May 18, 2022 · High School Can a magnifying mirror or prism be used somehow as a low-tech reading aid for the visually impaired?
Have Scientists Seen an Electron? How We Detect Them
Nov 17, 2015 · Have Scientists Seen an Electron? Why Seeing Isn’t Enough This article is not about literally seeing a single electron with your eye; it addresses the broader—and common—belief that …
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