Has Anyone Ever Owned/Played DVD9s? • Physics Forums
May 6, 2022 · Most DVDs are DVD5s, which are single-layer discs, while DVD9s are less common and feature a double-layer format. There is uncertainty regarding whether DVD9s will …
A Guide to Self Study Calculus - Physics Forums
Aug 17, 2024 · We often get questions here from people self-studying mathematics. One of those questions is what of mathematics should I study and in what order.
CD Players: How Do They Interfere? - Physics Forums
Nov 9, 2004 · CD players utilize a laser to read information encoded in the form of pits and bumps on a disc, with the laser beam's reflection intensity varying based on these features. The …
How does the mechanism of a dual layer DVD read the data from …
Mar 22, 2012 · A dual layer DVD utilizes a laser that adjusts its focus to read data from two distinct layers, with the first layer being semi-transparent. The reflectivity of both layers is …
Kinematics equations: Prove that a=vdv/ds • Physics Forums
Dec 1, 2019 · The discussion revolves around proving the equation a = v dv/ds in the context of kinematics, focusing on one-dimensional motion where velocity is a function of time and …
What is v(dv/dx) and how does it relate to acceleration?
Mar 12, 2013 · The discussion focuses on the expression v (dv/dx) as a model for acceleration, highlighting its derivation using the chain rule where v = dx/dt. This formulation is presented as …
Rainbow light reflection on TV from my hand • Physics Forums
Jun 21, 2025 · The phenomenon of rainbow light reflection on a TV screen from a hand is attributed to the TV acting as a diffraction grating, where white light from the hand is split into …
Question about whether UV light can penetrate a cardboard box
Aug 16, 2020 · Cardboard can either absorb or reflect UV light, depending on the angle of incidence. Generally, closed cardboard boxes will protect items inside from UV exposure, …
Vinyl records, RPMs, and velocity. How does it work?
Jan 17, 2012 · FWIW, CDs and DVDs are recorded with the disk moving at a constant linear speed, and the rotation speed does change while the disk is playing. Because the data is …
The Secret: Transforming Mercury to Gold Using Everyday Materials
Mar 31, 2011 · The discussion centers on the theoretical possibility of transforming mercury into gold using everyday materials, particularly through the use of radioactive components found in …