In Polly Cove, just outside of West Dover, Nova Scotia there is a granite boulder with a petroglyph carving of a pattern similar to a Celtic swirl. The carving is located near the top of the hill to the left of the old foundation.
I thought it would be interesting to make a 3D reconstruction of the petroglyph carving using image analysis software. The software works by comparing parallax (change in viewpoint) from a series of images and generates a series of 3D points. In order to use the Bundler SfM photogrammetry software I took a series of 10 photos of the double spiral pattern. To improve the accuracy of the experiment I used a slide bar to shift the camera by 1 centimeter for each photo.
There is a double spiral petroglyph on a granite boulder in Polly Cove.
The petroglyph is located near the top of the rock.
Here is a photo of the new textbook A SURVEY OF MATHEMATICS WITH APPLICATIONS 9th Edition
Yesterday I got my copy of the new textbook A SURVEY OF MATHEMATICS WITH APPLICATIONS 9th Edition from Pearson.
This new edition of the textbook was published on January 6, 2012 and has special meaning to me because it features a photo of my prototype sierpinski fractal antenna design in the chapter on Non-Euclidean Geometry and Fractal Geometry (page 555). I have always found fractals interesting and I am really proud that Pearson selected my image to use in their textbook.
As I flipped through the textbook today I was impressed with the improvement in the quality and readability of math textbooks since I was a student!
This textbook has been updated with modern references and provides quite a few real world math problems for students to study. The graphic design of the textbook is top-notch with excellent colour illustrations that will help to explain mathematic concepts to the reader.
Here is a photo of page 555 from the math textbook that features my fractal antenna image.
Here my name, Andrew Hazelden, is listed in the credits section of the textbook.
Here is a photo of road testing the bike trailer with a trip to the flying hill.
I use my bike every day to get around the village of West Dover. I've often thought that it would be really handy to have a bicycle trailer. Over the last two weekends my brother and I built our first prototype version. The trailer works nicely both on the paved highway and off road on trails in the West Dover Barrens. We have nicknamed the trailer the "Tundra Kart".
This October the trees in West Dover have been bright and full of vibrant colours. I went on a short photography walk this evening during "magic hour" to to capture the moment.
I have found that one of my favorite woodworking projects has been the construction of a Bench Table. I built it with my brother over a weekend. It is essentially a 1/2 picnic table. The version we built was 10 feet long. I find it perfect for sitting at when I fly model airplanes as you can use it to hold laptops and gear and is at the perfect height for tinkering with model airplanes between flights. After using the table for a year it was discovered that adding an extra diagonal support running from the table bracket to just in front of the seat post really helped with rigidity.
The design of this table is based upon Hal's plans at Ranch Ramblings.
In 2006 I spent a month as a volunteer working in the gardens of Windhorse Farm. Jim and Margaret Drescher welcomed me into their space and I really benefited from their warmth and kindness. Living at Windhorse was an amazing experience for me as I learned so much from everyone on the farm.
I worked with Jamie Mulligan-Smith, the garden manager, and Jake Wentzel in April and May to prepare the gardens. I learned how to sow seeds in the garden, transplant young plants to the greenhouse, and uncover and prepare the perennial beds. I also did a little work to help Danielle who ran the Windhorse Farms Plant Nursery. Every day I learned new techniques and ideas. I was involved with some interesting projects like "sod conversions" and even got to do a bit of carpentry work to build some trellises for the beans to grow on. I also did some repair work on the old wooden garden shed.
Comments (2) 
