Credit & Copyright: Joe Orman
Explanation:
What if you woke up one morning and saw
more than one Sun in the sky?
Most probably, you would be seeing sundogs, extra-images of the
Sun created by falling
ice-crystals in the Earth's atmosphere.
As water freezes in the atmosphere,
small, flat, six-sided,
ice crystals might be formed.
As these crystals flutter to the ground,
much time is spent with their faces flat, parallel to the ground.
An observer may pass through the same plane as many of the
falling ice crystals near sunrise or sunset.
During this alignment, each crystal can act like a miniature lens,
refracting sunlight into our view and creating
parhelia,
the technical term for sundogs.
Sundogs were
photographed here in a cloudy sky above the
Very Large Array of
radio telescopes.
The real Sun is near the center above the train tracks. A bright
sundog is visible on the far right, and a dim one on the far left.
Ice-crystals can create other strange
illusions of the Sun and Moon including halos and pillars
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
atmosphere - VLA - Sun dogs - атмосфера Земли - солнечный зайчик - солнечная колонна - Радиоинтерферометр - Радиотелескоп
Публикации со словами: atmosphere - VLA - Sun dogs - атмосфера Земли - солнечный зайчик - солнечная колонна - Радиоинтерферометр - Радиотелескоп | |
См. также:
Все публикации на ту же тему >> | |
