Promoting Nancy’s photography and educating the public about nature, photography, and God

Category: Applied math

  • How To Find The Area Of An Object Using Photoshop

    Mathematical or drafting programs may do a better job of finding the area of all sorts of seemingly random two-dimensional shapes.  And I may have used one or two of these as a student.  But I haven’t had any of them on my computer for many moons.  So when I recently needed to compare the…

  • A Solution To Second Mat(h) Problem

    Sadly, we had no winners in this contest.  Here is a solution to that math problem: There is more than one way to solve this problem, but we will be exploiting three different relationships. First, in preserving the aspect ratio, the length of the image (we’ll call L) is 11/2 times the width (W). .…

  • A Second Practical Mat(h) Problem

    OK, here’s another problem inspired by matting pictures.   Suppose you have an image that you want to put in a standard 16″ by 20″ mat.   You can print the image any size but want to keep the original 2:3 aspect ratio (meaning that the length will always be 50% longer than the width…

  • Ideas For Shooting The Solar Eclipse In Miami With Phone Or Camera

    I have some ideas for shooting the eclipse by either phone or SLR camera.   For those who haven’t heard, the next eclipse will be Monday, August 21st. In Miami, the eclipse will start around 1:30 pm, right after local apparent noon (when the sun crosses due south of us around 1:24 pm and is…

  • Comments on Mat(h) Solution

    I posted our first Simple Mat(h) Problem on April 27, 2017, and Jim Farrington submitted a solution a couple of weeks later. Here are a few more comments on the problem that I published (but in the wrong place). Although the mat cutter has no kerf, the blade does swing down at the start of…