Chicago Fanatics Message Board :: View topic - Longest Daylight Of The Year

Why does the sun appear so much larger when it is on the horizon then when it is high in the sky?

That the Sun appears larger when it is on the horizon is just an optical illusion. The brain thinks that objects on the horizon should be farther away than objects overhead; since the Sun is the same apparent size in both places, the brain concludes that the Sun is physically bigger when it's on the horizon, and thus tricks you into thinking that the angular size is bigger than when it's overhead. This phenomenon is known as the Ponzo Illusion, and occurs for the Moon as well.

To convince yourself that this is, in fact, an optical illusion, put your head between your legs and look at the Sun upside down when it's on the horizon: it should look the same as it does when overhead.

Well y'all Central Time folks can complain all y'all want, but thanks to MY MAN MITCH, here in Indiana we live in Eastern Time, cause that's where bidness happens, so that'll bring jobs to Indiana!!

:roll:

Whatever, geographically Indiana should fall in Central Time, so the sky wouldn't still be light at 10pm!

And the winters...omg...do not get me started on winter... :twisted:

Happy Solstice and all that!

Whatever, geographically Indiana should fall in Central Time, so the sky wouldn't still be light at 10pm!

And the winters...omg...do not get me started on winter... :twisted:

Happy Solstice and all that!

Central time for this Hoosier. You just need to get to NWI

Author:	good dolphin [ Fri Jun 21, 2013 1:10 pm ]
Post subject:	Longest Daylight Of The Year
and its dark enough to be night at noon. Thanks Obama

Author:	T-Bone [ Fri Jun 21, 2013 2:47 pm ]
Post subject:	Re: Longest Daylight Of The Year
This crossed my mind this morning when looking out the window just after 5am and it being light out.

Author:	Darkside [ Fri Jun 21, 2013 8:27 pm ]
Post subject:	Re: Longest Daylight Of The Year
Fuckin long day allright. 12.5 hour day. Stupid heat. thanks obama.

Author:	Houston Homer [ Fri Jun 21, 2013 8:35 pm ]
Post subject:	Re: Longest Daylight Of The Year
Well y'all Central Time folks can complain all y'all want, but thanks to MY MAN MITCH, here in Indiana we live in Eastern Time, cause that's where bidness happens, so that'll bring jobs to Indiana!! Whatever, geographically Indiana should fall in Central Time, so the sky wouldn't still be light at 10pm! And the winters...omg...do not get me started on winter... Happy Solstice and all that!

Author:	Telegram Sam [ Fri Jun 21, 2013 9:27 pm ]
Post subject:	Re: Longest Daylight Of The Year
I'm driving west on the Kennedy a little while ago and watching what appears to be an enormous sun setting. I remember that there is some trick the eyes play that changes the perception of the size of the sun based on objects on the horizon or something, so I Google it when I get home and find this (bold italics mine:) Quote: Why does the sun appear so much larger when it is on the horizon then when it is high in the sky? That the Sun appears larger when it is on the horizon is just an optical illusion. The brain thinks that objects on the horizon should be farther away than objects overhead; since the Sun is the same apparent size in both places, the brain concludes that the Sun is physically bigger when it's on the horizon, and thus tricks you into thinking that the angular size is bigger than when it's overhead. This phenomenon is known as the Ponzo Illusion, and occurs for the Moon as well. To convince yourself that this is, in fact, an optical illusion, put your head between your legs and look at the Sun upside down when it's on the horizon: it should look the same as it does when overhead. http://curious.astro.cornell.edu/question.php?number=230 So who's going to try this tomorrow and report back? I'm looking at you, KS.

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Author:	Colonel Angus [ Fri Jun 21, 2013 10:06 pm ]
Post subject:	Re: Longest Daylight Of The Year
Houston Homer wrote: Well y'all Central Time folks can complain all y'all want, but thanks to MY MAN MITCH, here in Indiana we live in Eastern Time, cause that's where bidness happens, so that'll bring jobs to Indiana!! Whatever, geographically Indiana should fall in Central Time, so the sky wouldn't still be light at 10pm! And the winters...omg...do not get me started on winter... Happy Solstice and all that! If they'd put Michigan in the Central time zone, the Redwings would have no excuse to leave the Blackhawks' division.

Author:	Hank Scorpio [ Fri Jun 21, 2013 10:09 pm ]
Post subject:	Re: Longest Daylight Of The Year
Houston Homer wrote: Well y'all Central Time folks can complain all y'all want, but thanks to MY MAN MITCH, here in Indiana we live in Eastern Time, cause that's where bidness happens, so that'll bring jobs to Indiana!! Whatever, geographically Indiana should fall in Central Time, so the sky wouldn't still be light at 10pm! And the winters...omg...do not get me started on winter... Happy Solstice and all that! Central time for this Hoosier. You just need to get to NWI

Author:	Telegram Sam [ Fri Jun 21, 2013 10:20 pm ]
Post subject:	Re: Longest Daylight Of The Year
Hank Scorpio wrote: Central time for this Hoosier. You just need to get to NWI

Author:	Apologist [ Sat Jun 22, 2013 8:48 pm ]
Post subject:	Re: Longest Daylight Of The Year
Here is a pic of the Super Moon:

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