FACTOID # 28: Austin, Texas has more people than Alaska.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Anticrepuscular rays

Anticrepuscular rays are similar to crepuscular rays, but seen opposite the sun in the sky. Sunlight travels in straight lines, but the projections of these lines on Earth's spherical atmosphere are great circles. Hence, straight-line crepuscular rays from a setting (or rising) sun can appear to re-converge at the antisolar point. Anticrepuscular rays are most frequently visible near sunrise or sunset. Crepuscular rays are usually much brighter than anticrepuscular rays. This is because for crepuscular rays, seen on the same side of the sky as the sun, the atmospheric light scattering making them visible is taking place at small angles (see forward scattering). Crepuscular rays at sunset Crepuscular rays at Telstra Tower, Canberra Crepuscular rays, in atmospheric optics, also known as sun rays, are rays of sunlight that appear to radiate from a single point in the sky. ... The antisolar point is the imaginary point on the celestial sphere exactly opposite the sun. ... The Rayleigh effect, seconds before sunrise in New Zealand Sunrise, also called sunup in some American English dialects, is the time at which the first part of the Sun appears above the horizon in the east. ... A composite image showing the terminator dividing night from day, running across Europe and Africa. ... The Mie theory, also called Lorenz-Mie theory, is a complete mathematical-physical theory of the scattering of electromagnetic radiation by spherical particles, developed by Gustav Mie in 1908. ...



 Anticrepuscular Rays, Chandler Arizona. Sept. 8th, 2005
Anticrepuscular Rays, Chandler Arizona. Sept. 8th, 2005


Image File history File linksMetadata Download high resolution version (8782x1398, 1075 KB) Summary Chandler Arizona, September 8th @ 6:25pm. ... Image File history File linksMetadata Download high resolution version (8782x1398, 1075 KB) Summary Chandler Arizona, September 8th @ 6:25pm. ...


External links


  Results from FactBites:
 
Crepuscular rays - Wikipedia, the free encyclopedia (321 words)
Crepuscular rays, in atmospheric optics, also known as sun rays, are rays of sunlight that appear to radiate from a single point in the sky.
The rays of the second and third types, in some cases, may extend across the sky and appear to converge at the antisolar point, which is the point on the sky sphere directly opposite the sun, and they are called anticrepuscular rays.
Crepuscular rays are usually red or yellow in appearance because the atmosphere acts as a giant lens, refracting low sunset rays into long curved paths passing through up to 40 times as much air than the rays from a high midday sun.
Anticrepuscular rays - Wikipedia, the free encyclopedia (109 words)
Anticrepuscular rays are similar to crepuscular rays, but seen opposite the sun in the sky.
Crepuscular rays are usually much brighter than anticrepuscular rays.
This is because for crepuscular rays, seen on the same side of the sky as the sun, the atmospheric light scattering making them visible is taking place at small angles (see forward scattering).
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m