Measure anything on your computer screen

One of my all-time treasured possessions is a Gerber Variable Scale [1] (Fig. 1). It was an absolute must-have if you were doing science in the 60s and 70s. The idea was straightforward — the device was a ruler consisting of a precision spring that you could adjust to any length to match graphs or oscillographs [2]. [...]

Website introduction video

We’ve added a lot of content to our website at www.fieldp.com in 13 years. In fact, there’s so much material that the site might intimidating to first-time visitors looking for software or educational resources. To help, we’ve added a short overview video on the home page. Here it [...]

Identifying a proxy server

As part of the license management system, our main technical programs make an Internet check of the computer activation status. Setting up an activation setup is largely automatic on most computers, requiring little user effort. Some manual operations are necessary if the user’s computer is on a company network with a proxy server. This posting reviews [...]

Large mesh plots revisited: program-not-responding

Several users have reported intermittent plotting problems when working in Windows 7 with large meshes (i.e., millions of elements) in our 2D and 3D programs. I addressed the problem in a previous blog . In recent tests, I found that the precautions I described in the blog were necessary but not sufficient to ensure reliable plotting. [...]

PDF bookmarks in Latex documents

As I mentioned in previous posts, Latex is by far the best choice for writing scientific articles and books. In comparison to word processors, Latex requires a significant learning investment in the beginning, but offers smooth sailing thereafter. To put this in perspective, if you are going to spend a lifetime writing scientific papers is it [...]