What do convergence and divergence mean? And why do they matter?
I understand that when a series diverges, y doesn't approach 0 when x approaches infinity, and converging series do. But what does this say? I just want to understand some applications. NOTE: I'm...
How to model converging illumination through object plane (in ZEMAX)
Oct 25, 2025 · Hello community, I'm designing a projection lens system for a 35mm film projector in Zemax OpticStudio and struggling with the correct sequential mode setup for the illumination …
Series that converge to $\pi$ quickly - Mathematics Stack Exchange
In particular, take a look at the latest version of his talk on "The life of pi" (and its references!), which includes many of the fast converging algorithms and series used in practice for high precision …
Why is my COMSOL solution not converging? - Physics Forums
Aug 12, 2009 · Hello, I'm a 2nd year student, and I'm trying to get to know COMSOL. I'm starting off by solving simple problems with the incompressible Navier-Stokes model, but I keep having trouble with …
Identifying Converging and Diverging Lenses: Explaining with Principal ...
Feb 1, 2005 · To determine whether a lens is converging or diverging, analyze the behavior of the principal rays after they pass through the lens. A convex lens will cause rays to converge at a point …
Graphically determining the focal length of a converging lens
Nov 5, 2023 · So I have plotted all the given data points on a graph, putting 1/di on the y- axis and 1/do on the x-axis. I have to now find focal length from the graph...
Why is the image distance negative in a Two Thin Lens setup?
Nov 6, 2011 · 1. Two 25.0 cm focal length converging lenses are placed 16.5 cm apart. An object is placed 35.0 cm in front of one lens. Where will the final image formed by the second lens be located? …
What Is the Proper Sign Convention for a Virtual Image in Lens ...
Feb 5, 2006 · A converging lens with a focal length of 12.0 cm forms a virtual image 17.0 cm to the right of the lens, and the object must be positioned between the lens and the focal point to create this …
Finding Distance Between Lens Positions: Solve for a
Apr 3, 2007 · A converging lens of focal length f = 4.2 cm forms a sharp image for two positions of the lens. What is the distance a between these two positions? Homework Equations 1/p + 1/q = 1/f The …
Location of object that forms an image in 2 lens system
Mar 11, 2015 · Homework Statement Two converging lenses having focal lengths of f1 = 12.5 cm and f2 = 19.5 cm are placed a distance d = 49.0 cm apart as shown in the figure below. The image due to …