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Астронет: Астрономическая картинка дня Дорожки на воде http://www.variable-stars.ru/db/msg/1959015/eng |
Credit & Copyright: Jose Antonio Hervas
Explanation:
WhatБs causing those lines?
Objects in the sky sometimes appear
reflected as lines across water Б but why?
If the waterБs surface is smooth, then reflected objects would
appear similarly -- as spots.
But if the
water is choppy, then there are many places where light from the object can
reflect off the water and still come to you -- and so together form, typically, a
line.
The same effect is frequently seen for the
Sun just
before sunset and just
after sunrise.
Pictured about 10 days ago in
Ibiza,
Spain,
images of the
setting Moon,
Venus (top), and
Saturn
(right, faint) were captured both directly and in line-reflected forms from the
Mediterranean Sea.
The other bright object on the right with a water-reflected line is a
beacon on a rock to warn passing boats.
Explore Your Universe:
Random APOD Generator
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.