NeSpoon is a street artist from Warsaw, Poland. Her artistic focus is on the intricate patterns of lace, and breaking its granny stereotype by using it to beautify gritty urban spaces. NeSpoon calls her artistic approach the “jewellery of the public space”:
Jewellery makes people look pretty, my public jewellery has the same goal, make public places look better.
NeSpoon often uses the usual spray paint and stencils of enlarged lace patterns to produce her works on the street via
artist find at Lustik
(via velveteenjeeves)2 days ago
1 week ago
Wingtip vortices are a result of the finite length of a wing. Airplanes generate lift by having low-pressure air travelling over the top of the wing and higher pressure air along the bottom. If the wing were infinite, the two flows would remain separate. Instead, the high-pressure air from under the wing sneaks around the wingtip to reach the lower pressure region. This creates the vorticity that trails behind the aircraft. I was first introduced to the concept of wingtip vortices in my junior year during introductory fluid dynamics. As I recall, the concept was utterly bizarre and so difficult to wrap our heads around that everyone, including the TA, had trouble figuring out which way the vortices were supposed to spin. A few good photos and videos would have helped, I’m sure. (Photo credits: U.S. Coast Guard, S. Morris, Nat. Geo/BBC2)
Wallace-Bolyai-Gerwien theory is the theory that any two polygons are equidecomposable.
That is that one can be cut into finitely many polygon pieces and be rearranged to obtain the second polygon.
(via heisenburger)1 week ago
Marco Cadioli - Squares with Concentric Circles
(via nocrimeinthewasteland)1 week ago