Amalia Pica, Spinning Trajectories, 2009

John Pomara
Oil enamel on honeycomb aluminum panel
70.5x46.5” / 179.1x116.8cm

Unrolling these circles gives fills a triangle with base 2 π r and height r (where r is the radius of the filled disk). Such a triangle has area π r2. This does not serve as a complete proof for why this is the area of a circle, but can give you some intuition for why it should be. [code]

Dusk on Pinnacle Point Ridge ➾ Luke Gram

Apollo 15 Completes 2nd Lunar EVA (1 Aug. 1971) —- Astronaut David R. Scott, commander, gives a military salute while standing beside the deployed United States flag during the Apollo 15 lunar surface extravehicular activity (EVA) at the Hadley-Apennine landing site. The flag was deployed toward the end of EVA-2. The Lunar Module (LM), “Falcon,” is partially visible on the right. Hadley Delta in the background rises approximately 4,000 meters (about 13,124 feet) above the plain. The base of the mountain is approximately 5 kilometers (about three statue miles) away. This photograph was taken by astronaut James B. Irwin, lunar module pilot. While astronauts Scott and Irwin descended in the LM to explore the moon, astronaut Alfred M. Worden, command module pilot, remained in lunar orbit in the Command and Service Modules (CSM).

Tom Sachs - Spiderweb, 2009-2011, pyrography on wood, 72” x 49.5” x 2”

Josef Albers (German/American, 1888 –1976) / Untitled (for Never Before), ca. 1976, halftone screen with ink and graphite, 25.4 × 24 cm.
via j08433

Moon by Subhajeet Mukherjee

Transformation of a Scheme No. 19
Josef Albers