http://craftcouncil.org/magazine/article/restoration-values#
“A decade ago, John Hindman couldn’t buy the windows and doors needed to resotre vintage homes; he had to make them. Today, his devotion to traditional methods and materials has culminated in an ingenious handcrafted ‘bungalito.’ “
Cutie
Group Kicks Off Earth Day Planting Ancient Tree Clones
A team led by a nurseryman from northern Michigan and his sons has raced against time for two decades, snipping branches from some of the world’s biggest and most durable trees with plans to produce clones that could restore ancient forests and help fight climate change.
Now comes the most ambitious phase of the quest: getting the new trees into the ground. Ceremonial plantings of two dozen clones from California’s mighty coastal redwoods will take place today in seven nations: Australia, New Zealand, Great Britain, Ireland, Canada, Germany and the U.S.
Read more: http://www.laboratoryequipment.com/news/2013/04/group-kicks-earth-day-planting-ancient-tree-clones
Their going to gene slam the whole city! - John “ripster” Bolton
The familiar trigonometric functions can be geometrically derived from a circle.
But what if, instead of the circle, we used a regular polygon?
In this animation, we see what the “polygonal sine” looks like for the square and the hexagon. The polygon is such that the inscribed circle has radius 1.
We’ll keep using the angle from the x-axis as the function’s input, instead of the distance along the shape’s boundary. (These are only the same value in the case of a unit circle!) This is why the square does not trace a straight diagonal line, as you might expect, but a segment of the tangent function. In other words, the speed of the dot around the polygon is not constant anymore, but the angle the dot makes changes at a constant rate.
Since these polygons are not perfectly symmetrical like the circle, the function will depend on the orientation of the polygon.
More on this subject and derivations of the functions can be found in this other post
Now you can also listen to what these waves sound like.
This technique is general for any polar curve. Here’s a heart’s sine function, for instance
First Person Mario: Endgame
Created by freddiew
(via:gamefreaksnz)
