background preloader

Fractales sur Google Earth

Fractales sur Google Earth
Written by Paul Bourke Started: October 2010. Last updated: October 2012 Introduction The following is a "photographic" gallery of fractal patterns found while exploring the planet with Google Earth. Each is provided with a KMZ file so the reader can explore the region for themselves. Readers are encouraged to submit their own discoveries for inclusion, credits will be included. Self Similarity Fractals are usually associated with self similarity across scales. An example of this for a river system is illustrated below [KMZ file], clicking on an image will give the high resolution version of the image without the markings. Another way to think about whether something exhibits self similarity is if it can be interpreted to exist at different scales.

Related:  Beauté mathématique

Venus the Two-Faced Cat Still a Mystery Venus the two-faced cat is currently the most famous feline on the planet. The three-year-old tortoiseshell has her own Facebook page and a YouTube video that's been viewed over a million times, and appeared on the Today Show last week. (Watch National Geographic cat videos .) One look at this cat and you can understand why: One half is solid black with a green eye—the other half has typical orange tabby stripes and a blue eye. Why Does My Dog . . . Walk in a Circle Before Lying Down? Many dogs will circle around a spot before they settle down to rest. While no one can be certain of the exact reason why canines do this, the ritual is likely a residual habit from the days when wolflike dogs lived out in the wild, says veterinary behaviorist Dr. Karen Sueda, DVM, of the VCA West Los Angeles Animal Hospital. Your dog’s ancestors had to sleep outside, in the elements, without much warmth or safety. Walking around a spot was a way to stamp down grass, leaves or snow and create a soft, level surface — something akin to carving out a nest.

Figures for "Impossible fractals" Figures for "Impossible fractals" Cameron Browne Figure 1. Arkansas grows ‘moon trees’ Cones from the Loblolly pine tree. Seeds from this type of tree were sent to space aboard the Apollo 14 mission; they've been growing in Arkansas and elsewhere ever since.Wikipedia WASHINGTON, Ark. – If a loblolly pine tree next to the Old Confederate Courthouse seems a little out-of-this-world, it's because it grew from seeds that were passengers on the Apollo 14 mission in January 1971. Commonly referred to as the moon tree, the loblolly pine seeds were part of an experiment. Before becoming an astronaut and command-module pilot for Apollo 14, Stuart Roosa worked for the U.S. Forestry Service as a smoke jumper -- a firefighter who parachutes into remote areas to fight fires.

Rectangle World – HTML5 Canvas and JavaScript: Tutorials and Experiments Making the Paper Snowflake Web App, Part 1 – Layering canvases Published on December 31, 2013 My first blog post explaining some of the code behind my Paper Snowflake web app. In this installment, we look at how multiple canvases are used together to handle drawing and interactivity tasks. If Corporations Are People, Then Why Not Rivers? In 1982, filmmaker Godfrey Reggio released a film called KOYAANISQATSI. The title is the Hopi word for ‘life out of balance,” and it deals with the relationship between man and nature. From Reggio’s perspective, “There seems to be no ability to see beyond, to see that we have encased ourselves in an artificial environment that has remarkably replaced the original, nature itself. We do not live with nature any longer; we live above it, off of it, as it were.” I was reminded of this film when I read the news item about the government of New Zealand granting legal personhood to the Whanganui River.

How Important Was Rachel Carson's Silent Spring in the Recovery of Bald Eagles and Other Bird Species? Dear EarthTalk: I understand there is good news about the recovery of bird species like the peregrine falcon, bald eagle and others owed to the 1972 ban on DDT. Can you explain?— Mildred Eastover, Bath, Maine Rachel Carson’s seminal 1962 book, Silent Spring, told the real-life story of how bird populations across the country were suffering as a result of the widespread application of the synthetic pesticide DDT (dichlorodiphenyltrichloroethane), which was being used widely to control mosquitoes and others insects. Carson reported that birds ingesting DDT tended to lay thin-shelled eggs which would in turn break prematurely in the nest, resulting in marked population declines. The problem drove bald eagles, our national symbol, not to mention peregrine falcons and other bird populations, to the brink of extinction, with populations plummeting more than 80 percent.

The Unique Funeral Behavior of a Bird Human beings are not the only creatures on Earth to ceremonially honor their dead. There have been many anecdotal reports which suggest that other animals carry out their own traditions when of their own passes away. This includes primates, elephants, birds, and other species which we consider to be intelligent.