Why December Has The Longest Days
1,013,757
Publicado 2015-12-22
December has the longest solar days (noon-to-noon) because of the weird way a combination of the axial tilt of the earth and the eccentricity of its elliptical orbit conspire in December. Perihelion + Solstices = Long Days.
Here’s some more info about:
Solar Time: en.wikipedia.org/wiki/Solar_time
The Equation of Time: en.wikipedia.org/wiki/Equation_of_time
Milankovitch cycles: en.wikipedia.org/wiki/Milankovitch_cycles
Perihelion: en.wikipedia.org/wiki/Perihelion_and_aphelion
Apsis: en.wikipedia.org/wiki/Apsis
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Music by Nathaniel Schroeder www.soundcloud.com/drschroeder
Thanks to Nima Doroud for contributions. Created by Henry Reich
Todos los comentarios (21)
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Fantastic animations Henry.
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Just thinking of all the research that went into this video is stressing me out
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I always think I'm already going to know what these videos are about, but every single time I end up having my mind blown...
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Milankovich Milankovitch Milanković
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This is really just a fault in the English language. In Danish, we have the word "døgn" which means a full day and night or 24 hours, whereas in English only a day is used which can either mean the time where the sun is up or a full cycle of day and night aka 24 hours. Most people say that winter has the shortest day of the year because they mean day as in the time the sun is up, whereas you are talking about a day meaning 24 hours. In conclusion, winter has both the shortest and the longest days at the same time. Hurray for English.
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this video wasnt supported? :OO
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I always wondered why the sunrise and sunset times weren't symmetrical. Thanks for explaining it.
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3000 years of observations in 3 minutes :D
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I laughed tears at "REALLY not to scale". :D
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Mind blown! I’ve been wondering why the sunrise and sunset turn around at different months. I’m still not sure I grasp it, but I get the general impression of what you’re saying anyway! Thanks for that!
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Thank you for the video, MinutePhysics. I enjoyed it and learned a lot.
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Always manage to blow me away MP. Well done
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This video does not explain why I woke up 4 hours early today.
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I wanted to check what day was the longest, but I could only find articles about the sun solstice. Then I remembered that there was a minutephysics video about it. Thanks, Henry!
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Dude, you make my life better. I enjoy so much watching your videos. Thank you very much for your amazing work!!
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Your videos are great and really helped me feel happy after a bad day. Thank you!
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wow i never really thought about that, thats amazing :D
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I dont care how long the day is, if I have to go to work in the dark and come home in the dark it will still depress the shit out of me.
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thank you so much!!! the best presentation of this question ever~~~~ luv u guys!!
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And I'm suddenly hooked on this channel and can't be released. But I like it. I'm subscribing for sure after this video!
