by Mary Oliver.
"Wild Geese ”
I was lucky to be on an airplane the other day, in a windowseat, facing west, with a plastic cup of seltzer water and a camera..There is a different quality to the light up there, so much closer to the source
this just made me giggle so hard
A German officer visited Picasso in his Paris studio during the Second World War. There he saw Guernica and, shocked at the modernist chaos of the painting, asked Picasso: “Did you do this?” Picasso calmly replied: “No, you did this.”
René Magritte (1898-1967) - A masquerade ball (Le Bal Masqué), 1958
THE HEMIHELIX: Scientists discover a new shape while messing around with rubber bands. Warning: perversions are involved.
Figure 1. Illustration of a helix (top), a hemihelix with one perversion marked by an arrow (middle) and a hemihelix with multiple perversions (bottom). The scale bar is 5 cm for each image. Credit: Jiangshui Huang
Figure 2. Sequence of operations leading to the spontaneous creation of hemihelices and helices. Credit: Jia Liu
- Starting with two long elastomer strips of different lengths,
- the shorter one is stretched to the same length as the other.
- While the stretching force, P, is maintained,
- the two strips are joined side-by-side.
- Then, as the force is slowly released,
- the bi-strip twists and bends to create either a helix or a hemihelix.
Figure 4. Snapshots recorded from the finite element simulations, illustrating the formation of (A) a helix, (B) a hemihelix with single perversion and (C) a hemihelix with 12 perversions.
Jia Liu, Jiangshui Huang, Tianxiang Su, Katia Bertoldi, David R. Clarke:
"Structural Transition from Helices to Hemihelices in the journal PLoS ONE — 23 April 2014
Nature abounds with complex, three-dimensional shapes. Of these, the helix and spiral are amongst the most ubiquitous, often emerging during growth from initially straight or flat 2-D configurations. For instance, initially straight roots form helical shapes while attempting to penetrate more compact soils.
NOTE: Something is said to be chiral if it is not identical in shape to its mirror image; the simplest example is the human hand.
Similarly, as seed pods open, a chirality-creating mechanism turns an initially flat pod valve into a helix. In other instances, the chirality can switch during growth as noted by Asa Gray and Darwin in their studies of plant tendrils. They noted that as a growing plant tendril circumnutates [that is, twists around] it can attach to another object and then, being fixed at both ends, its chirality reverses in between to maintain its topology as it continues to grow.
This reversal of chirality - often referred to as a perversion - forms what we term here a simple hemihelix. More generally, we introduce the term hemihelix to describe multiple reversals in chirality connected by perversions.
Read more about this in a general way at Physics.org News …
For the math and a lot of discussion, go to PLoS ONE …
La Grande Tapisserie (The Great Tapestry) by Julien des Monstiers, 2013.
—Byron Katie (via beherenowandzen)
light splaying out, in a wonderful & gifworthy type of motion