The reason why Involute gears turn smoothly.
Fig 1) How to draw involute of circle.
Fig 2&3) Move and rotate the observing point.
Fig 4&5) The curves are tangent.
Fig 6) Involute gears turn smoothly.
From far away Czech artist Jakub Geltner's works appear as flocks of birds, seagulls and pigeons gathered on clusters of rocks or resting just beneath a busy overpass. When one looks closer however they realize the groupings are not perched birds, but rather surveillance cameras and satellite dishes the artist has installed as a part of his series “Nest.”
Geltner’s most recent installation is titled ‘Nest 05,’ which was presented at the 2015 Sculpture by the Sea in Aarhus, Denmark. The installation, which covers a stretch of mossy rocks, explores the notion of surveillance in even our most peaceful places—the areas we seek when we want to escape.
The Prague-based artist has been installing these works since 2011, bringing together groups of technological equipment commonly used to observe, and turning them into the focal point for the viewer. Within the last four years his works have been placed at a former elementary school, church facade, waterfront, and the skeleton structure of a former KV KSC (Regional Committee of the Communist Party of Czechoslovakia).
Geltner lives and works in Prague and graduated from two universities also in the city, Czech Technical University in 2004 and the Academy of Fine Arts in 2013. (via iGNANT)
Starting with carpenter and art pencils containing thick leads, Russian artist Salavat Fidai uses an X-ACTO knife to carve miniature renderings of hands, buildings, and various characters from pop culture. The delicate process requires a good understanding of how much pressure the lead can withstand, but even then mistakes are inevitable. The Ufa-based artist is fascinated by all things miniature, and also paints on seeds and matchboxes. Watch the timelapse below to see his process for carving an entire replica of the Eiffel Tower.
Moon and Space Station in one shot. Very cool photo, Dylan!
Hovertext: Now to shoot everyone on twitter...
What a difference 6 months makes!
This thing is actually starting to look like a potager. The ‘before’ shows what back yard looked like when we purchased the house and the ‘after’ is today! One of the first things we did was remove a large pine tree which shaded our yard & dumped pine needles on everything, so now we have full sun in most of the yard.
I started seeds back in February, build the raised beds in April, planted in May… oh, added a gravel path, dug out a water feature (still not finished yet), removed approximately 3 tons of weeds (my estimation), and built a catio.
Raised beds (clockwise, starting from front left):
Not too shabby, I guess. I still have so much more to do. Build a water feature, espalier a few apple trees and get rid of the all the god damn weeds that moved in as soon as we removed that pine tree.