by APOD Robot » Mon Sep 21, 2020 4:05 am
Omega Sunrise
Explanation: Capturing this sunrise required both luck and timing. First and foremost, precise timing was needed to capture a
sailboat crossing right in front of a rising
Sun. Additionally, by a lucky coincidence, the background
Sun itself appears unusual -- it looks like the
Greek letter Omega (Ω). In reality, the Sun remained its circular self -- the
Omega illusion was created by
sunlight refracting through warm air just above the water. Optically, the feet of the capital
Omega are actually an
inverted image of the Sun region just above it. Although somewhat rare, optical effects caused by the
Earth's atmosphere can make distant objects near the horizon -- including the
Sun and
Moon -- look
quite unusual.
This single exposure image was taken over the
Mediterranean Sea just over two weeks ago near
Valencia,
Spain.
[url=https://apod.nasa.gov/apod/ap200921.html] [img]https://apod.nasa.gov/apod/calendar/S_200921.jpg[/img] [size=150]Omega Sunrise[/size][/url]
[b] Explanation: [/b] Capturing this sunrise required both luck and timing. First and foremost, precise timing was needed to capture a [url=https://www.wikihow.com/Sail-a-Boat]sailboat[/url] crossing right in front of a rising [url=https://solarsystem.nasa.gov/solar-system/sun/overview/]Sun[/url]. Additionally, by a lucky coincidence, the background [url=https://solarsystem.nasa.gov/solar-system/sun/in-depth/]Sun[/url] itself appears unusual -- it looks like the [url=https://en.wikipedia.org/wiki/Greek_alphabet]Greek letter[/url] Omega (Ω). In reality, the Sun remained its circular self -- the [url=https://www.atoptics.co.uk/atoptics/sunmir2.htm]Omega illusion[/url] was created by [url=https://scienceblogs.com/startswithabang/2013/02/13/the-physics-of-sunsets]sunlight refracting[/url] through warm air just above the water. Optically, the feet of the capital [url=https://en.wikipedia.org/wiki/Omega]Omega[/url] are actually an [url=https://aty.sdsu.edu/explain/simulations/inf-mir/Omega.html]inverted image[/url] of the Sun region just above it. Although somewhat rare, optical effects caused by the [url=https://spaceplace.nasa.gov/atmosphere/en/]Earth's atmosphere[/url] can make distant objects near the horizon -- including the [url=https://apod.nasa.gov/apod/ap120608.html]Sun[/url] and [url=https://apod.nasa.gov/apod/ap090223.html]Moon[/url] -- look [url=https://apod.nasa.gov/apod/ap191228.html]quite unusual[/url]. [url=https://www.instagram.com/p/CFCtKxmBSlA/]This single exposure image[/url] was taken over the [url=https://en.wikipedia.org/wiki/Mediterranean_Sea]Mediterranean Sea[/url] just over two weeks ago near [url=https://youtu.be/NmsFT_OdDlU]Valencia[/url], [url=https://en.wikipedia.org/wiki/Spain]Spain[/url].
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