
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 …
A philosopher who challenges the basics and their assumptions
Nov 27, 2024 · I'm a philosopher who has challenged some basic assumptions, particularly physics. I produced and published an anomalous experiment on Zenodo that challenges the predictive energy …
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.
Rush Redux 2026 - Physics Forums
Feb 27, 2026 · Geddy Lee and Alex Lifeson apparently decided reform Rush for a new road tour in 2026-2027. Lifeson came over to Europe for some health checks, and Lee decided to come with …
Abel Prize awarded, 2026, to Gerd Faltings • Physics Forums
Mar 19, 2019 · TL;DR Abel Prize awarded, 2026. To German Mathematician Gerd Faltings, who had won the Fields medal in 1986, for his work on the Mordell Conjecture. Now we know ( joke) why …
Gravitons/ Gravity • Physics Forums
5 days ago · Hi I was wondering what determines whether the Graviton(assuming they exist) get absorbed or pass through an object?
Yet another aspiring scientist • Physics Forums
Mar 18, 2026 · My name is Echo, and I am a high school senior from Georgia. I plan on majoring in biochemistry and pursuing a career in forensic pathology. My end goal is to hopefully partner with …
Why is HCl called Hydrogen Chloride (by IUPAC naming)?
Nov 25, 2020 · The discussion revolves around the IUPAC naming of HCl, specifically why it is referred to as hydrogen chloride rather than hydrogen monochloride. Participants explore the implications of …
Difference between arctan (x) and cot (x) • Physics Forums
Jul 20, 2009 · The discussion clarifies the distinction between the functions arctan (x) and cot (x). Arctan (x), defined as tan -1 (x), is the inverse function of tan (x), while cot (x) is defined as 1/tan (x). The …