Credit & Copyright: Eric Houck
Explanation:
What lies at the end of a rainbow?
Something different for everyone.
For the photographer taking this picture, for example, one
end of the rainbow ended at a tree.
Others nearby, though, would likely see the
rainbow end somewhere else.
The reason is because a
rainbow's
position depends on the observer.
The center of a rainbow always appears in the direction
opposite the Sun,
but that direction lines up differently on the
horizon from different locations.
This rainbow's arc
indicates that its center is about 40
degrees to the left and slightly below the horizon, while the
Sun is well behind the camera and just above the horizon.
Reflections and refractions of sunlight from raindrops in a
distant storm in the direction of the
rainbow
are what causes the
colorful bands of light.
This single exposure image was captured in early January
near Knight's Ferry,
California,
USA.
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:
rainbow - радуга
Публикации со словами: rainbow - радуга | |
См. также:
Все публикации на ту же тему >> | |
