by otto oblande » Sat Sep 04, 2010 8:24 pm
This APOD reminds me of a vesica piscis,
http://en.wikipedia.org/wiki/Vesica_piscis"The Vesica piscis is a shape which is the intersection of two circles with the same radius, intersecting in such a way that the center of each circle lies on the circumference of the other. The name literally means the "bladder of a fish" in Latin. The shape is also called mandorla ("almond" in Italian).
The term is also used more generally for any symmetric lens."
with a Mycena Interrupta in the almond
http://en.wikipedia.org/wiki/Mycena"Mycena is a large genus of small saprotrophic mushrooms which are rarely more than a few centimeters in width. They are characterized by a white spore print, a small conical or bell-shaped cap, and a thin fragile stem. Most are grey or brown, but a few species have brighter colors. Most have a translucent and striate cap, which rarely has an incurved margin. ...
Thirty-three species are known to be bioluminescent, creating a glow known as foxfire. These species are divided among 16 lineages, leading to evolutionary uncertainty in whether the luminescence developed once and was lost among many species, or evolved in parallel by several species. The evolutionary purpose of the glowing is uncertain."
This APOD reminds me of a vesica piscis,
[url]http://en.wikipedia.org/wiki/Vesica_piscis[/url]"The Vesica piscis is a shape which is the intersection of two circles with the same radius, intersecting in such a way that the center of each circle lies on the circumference of the other. The name literally means the "bladder of a fish" in Latin. The shape is also called mandorla ("almond" in Italian).
The term is also used more generally for any symmetric lens."
[img2]http://upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Chalice_Well_Cover.jpg/220px-Chalice_Well_Cover.jpg[/img2]
with a Mycena Interrupta in the almond
[img2]http://upload.wikimedia.org/wikipedia/commons/thumb/0/06/Mycena_interrupta_01_Pengo.jpg/220px-Mycena_interrupta_01_Pengo.jpg[/img2]
[url]http://en.wikipedia.org/wiki/Mycena[/url]"Mycena is a large genus of small saprotrophic mushrooms which are rarely more than a few centimeters in width. They are characterized by a white spore print, a small conical or bell-shaped cap, and a thin fragile stem. Most are grey or brown, but a few species have brighter colors. Most have a translucent and striate cap, which rarely has an incurved margin. ...
Thirty-three species are known to be bioluminescent, creating a glow known as foxfire. These species are divided among 16 lineages, leading to evolutionary uncertainty in whether the luminescence developed once and was lost among many species, or evolved in parallel by several species. The evolutionary purpose of the glowing is uncertain."