EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


Encore - Upper Tangent Arc, Halo, Sundogs and Glitter Path Observed from Vancouver

February 28, 2020

Jul 04 English Bay Sundogs 01a (4)

Today's Earth Science Picture of the Day features an EPOD that was
chosen by viewers like you in our monthly Viewers' Choice polls.

Photographer: Doug Farmer
Summary Authors: Doug Farmer; Jim Foster
May 2014 Viewer's Choice Clearly visible on this splendid photo are
the upper tangent arc (top center), a portion of the 22 degree
circular halo and sundogs or parhelia. It was taken a little before
sunset on July 4, 2009, from Vancouver, British Columbia. Ice
crystals in cirrostratus clouds, covering much of the sky this
summer afternoon, are responsible for these arcs and halos. The tangent
arc forms when sunlight interacts with column-shaped hexagonal ice
crystals. These columnar crystals drift with their long axes nearly
horizontal. Sunlight enters through one of the prism's side faces and
exits through an alternate face. Note also the glitter path on
English Bay (lower center). See yesterday's Earth Science Picture
of the Day.
Photo Details: Nikon D300 camera; 16 mm focal length: f/11 aperture;
HDR 7 image sequence exposure times - 1/8000 sec. to 1/200 sec. (+/- 3
stops); ISO 200; Photomatix Pro Rev 4.2.7 software.
* Vancouver, British Columbia Coordinates: 49.277, -123.135

Related EPODs

Encore - Upper Tangent Arc, Halo, Sundogs and Glitter Path Observed
from Vancouver Encore - Fogbow Near Mount Luxmore, New Zealand
Corona Over Westmoreland State Park, Virginia Twilight Sky at
Mont-Saint-Michel Red Sprites and Airglow Double Rainbow Over
LaJolla, California
More...

Atmospheric Effects Links

* Atmospheric Optics
* Color and Light in Nature
* The Colors of Twillight and Sunset
* Refraction Index
* Image Gallery: Atmospheric Effects
* What is a Rainbow?

-
Earth Science Picture of the Day is a service of the Universities
Space Research Association.

https://epod.usra.edu

--- up 5 weeks, 2 days, 15 hours, 5 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


Cotton Trees

August 28, 2020

Menashe cottontree
Photographer: Menashe Davidson
Summary Author: M enashe Davidson

A 222fixtree222 s shown above, it’s easy to understand why this
tree is called the cotton tree. Its scientific name is Bombax
malabaricum, though it’s also referred to as the red silk cotton
tree or Kapok tree. Its fruits (pods) are brown oval capsules that
when ripe contain seeds and white cotton-like fibers, a mix of
lignin and cellulose. Cotton trees produce several hundred of
these 6 inch (15 cm) pods.

These photos were taken in a park in Rishon LeZion, Israel, where the
cotton tree is grown as an ornamental. When leafless, in February, its
scented flowers are particularly fragrant. In India, villagers
gather the fruit and extract the cotton-like substance for filling
pillows, sofas, etc. Photos taken May 29, 2020.
* Rishon LeZion, Israel Coordinates: 31.9730, 34.7925

Related EPODs

Cotton Trees Lavender Leaves of Three, Let it Be Mount
Nebo Hollyhocks Rise from the Ashes Spring and Summer Figs
Blossoming of Tajinastes
More...

Plant Links

* Discover Life
* Tree Encyclopedia
* What are Phytoplankton?
* Encyclopedia of Life - What is a Plant?
* USDA Plants Database
* University of Texas Native Plant Database
* Plants in Motion
* What Tree is It?

-
Earth Science Picture of the Day is a service of the Universities
Space Research Association.

https://epod.usra.edu

--- up 3 days, 20 hours, 20 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)