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What do we really know about the animals we play with go for walks with the animals we see each day that walk down the street or graze in the fields or become meals on our plates. Do we really know what it is like from their perspective? Well one woman did and done such a magnificant study about this core area and the emotions that the species we take for granted go through.
http://bit.ly/30eV97 From Publishers WeeklyThis is a Voronoi Diagram I drew.
I learned how to draw them from here: http://765.blogspot.com/2009/09/how-to-draw-voronoi-diagram.html They appeal to my objective nerd side as well as to my right-brain arty side. I'll probably be drawing more of them: Given a random set of input points like I use, they're different every time. The concept is fairly simple: Given a set of input points (I sprinkled a few grains of sugar over the page, then made a point where a grain landed), find boundaries for each point such that the area enclosed by the boundaries is closer to that point than any other. Imagine, for example, you have a set of public schools in a city and you want to determine boundary lines for who goes to what school. Make a Voronoi diagram using the schools as the input points, overlay it on a map of the city, and the boundary lines will show which school is closest to any given address (of course there are other considerations that come in to play in a real-world example like that). Want to draw one? It's relatively easy. You'll need a pencil and a ruler. You might want multiple lead colors and an eraser, as well. The link has detailed instructions, but I'll summarize them: 1. Get some input points. Make them up if you like, but random ones are fun to use. Sprinkle sugar or peppercorns over the page and make a mark where they land. I recommend starting small -- these things can take a while to do. Mine only had 10 points and took more than an hour. 2. Connect the nearest neighbors. All this means is connect each point with the others so that no lines cross and each line you make is the shortest possible one. These lines are blue in my drawing. What do I mean by "each line you make is the shortest possible one"? By way of example, take the top-most point in my drawing (call it A), move along the blue line left and down a bit (B), down to the next (C) and right to the next (D), and finally back up to A. Either A-C or B-D needs to be connected, but if both are, the lines cross. So you measure to find the shorter line, and use that one. In this case, it's B-D. Sometimes these are hard to spot, so look carefully, and measure! 3. Perpendicularly bisect each nearest neighbor line. These lines are red in my example. Again, measure the lines, make a mark at the midpoint, then use a triangle or a right angle on your ruler to get a good 90 degree angle. Each of these lines should intersect with the lines from the other sides of the triangles (e.g. B-D's bisector, the shortest red line in that area of the drawing, intersects with the bisectors of B-C and C-D AND ALSO intersects with the bisectors of A-B and D-A). As you're drawing them, these lines should meet up exactly, if you've measured and right-angled correctly. 4. Complete the cells from the bisectors. The lighter red lines are the bisectors I made that aren't part of the cells. You have to figure out where the cells actually lie (which is fairly easy when you remember that everything inside a cell should lie closer to the point inside that cell than any others). It's kind of interesting, and some of them can get quite complex.I'll never forget the months in elementary school where grade seven students became aware of physics became aware of the power of compressed air. I have no idea who passed down the sacred knowledge of the Bic Pen Orange Peel Gun, but it surely was the bane of many a teacher's existence at my school. It was MacGyver before the show existed. They actually banned oranges for a short period of time from lunches because they were finding mini orange peel bullets everywhere - plus, it was easier to ban orange peel than pens. You would be shocked at how much fun these could be in a school that was designed "open-concept". One could launch peel from the Grade One area to the Grade Six area with a proper arc and sufficient thrust... sorry... that sounded dirty. I hope my indiscretion didn't cause this post to lose its "ap-peel".



DIY Electric El Camino @ Wired.com
The electronic controls engineer from Franksville, Wisconsin, electrified an ‘81 Chevrolet El Camino, a poster child for the darkest days of American automotive design and a car with enough steel to shrug off a collision with a Sherman tank.Read more | Permalink | Comments | Read more articles in Green | Digg this!
Broch showing off a projection headphone speaker set he built following an idea shown in MAKE Magazine. Thanks, MAKE.. He's now got a lifetime subscription.
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