Difference between revisions of "2081: Middle Latitudes"

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(Fixed statement about southern hemisphere's opposite seasons.)
(Explanation: complete, imo)
 
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==Explanation==
 
==Explanation==
{{incomplete|Created by WINTER WHILE GETTING A SUNTAN. Need much more details on why it's bleak in the Winter in the middle. Also explain the title text Do NOT delete this tag too soon.}}
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Because of the Earth's axial tilt, the apparent daily path of the Sun through the sky - in particular, how long it takes and how high in the sky it gets - is different depending on how far North or South of the Equator you are (your latitude), and also changes throughout the year as the Earth revolves around the Sun. This fact yields two very important pairs of latitudes:
  
Middle latitudes are latitudes between the Arctic or Antarctic Circle (66 degrees North/South of the equator, respectively) and the Tropic of Cancer/Capricorn (23 degrees North/South of the Equator), two important latitudes on the globe that delineates some features of how the Sun rises and sets during the day.
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* {{w|Arctic Circle}} (66°33′North)
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* {{w|Tropic of Cancer}} (23°26′North)
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and
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* {{w|Tropic of Capricorn}} (23°26′South)
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* {{w|Antarctic Circle}} (66°33′South)
  
In the Northern hemisphere North of the Arctic Circle there is at least one day in the year when the sun doesn't set (in Summer) or doesn't rise (in Winter), below that latitude the sun will rise and set every day - even for a short time. Also in the North Hemisphere at any latitudes South of the Tropic of Cancer there is one day of the year where the sun will shine directly from above, while North of these latitudes there will be no such days, as the sun will always shine from an angle. The length of the day South of the Tropic of Cancer will also be close to 12 hours a day regardless of whether it is Summer or Winter. The length of the day in the middle latitudes will vary however, in the Winter time days are shorter, while in the Summer time days are longer. These are more visible the more one goes North, as close to the Arctic the sun will only rise for a few hours in the Winter, and similarly will only set for a few hours in the Summer.
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The latitudes that lie within these two bands are called the {{w|middle latitudes}} - also sometimes referred to as the North Temperate Zone and the South Temperate Zone respectively.
  
In the Southern hemisphere the situation is similar - any latitude South of the Antarctic Circle will have a day where there's no sun, and North of the Tropic of Capricorn there will be a time when the sun shines from directly above, and the length of the days are close to 12 hours the whole year. Between the two none of these will happen at any time of the year. Also days will be longer or shorter dependent on the season with Winter (centered around June in the Southern Hemisphere) having shorter days and Summer (centered around December) having longer (the opposite of how it is in the Northern hemisphere)
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The Tropics of Cancer and Capricorn are the latitudes beyond which, if you go any further from the Equator, it is no longer possible for the Sun to be directly overhead at any time of the year. Similarly, the Arctic and Antarctic Circles represent the latitudes beyond which it is possible for the Sun not to rise or set ''at all'' at some times of the year.
  
The comic refers to these facts that inside the middle latitudes there are simply no interesting features at any time of the year, however in Winter (in the Northern Latitudes) the sun will set earlier, and generally because of the lower temperatures and shorter days it has a bleak feeling.
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In the middle latitudes - which occur between these extremes - we instead get the rather less impressive phenomenon of daylight simply being a bit longer in summer and a bit shorter in winter.
  
The comic also plays on the idiom "split the difference" by applying it to the length of day vs. night.  To split the difference is to agree (or settle) on an amount of something, such as money, that is halfway between two others.  This can sometimes be characterized as a compromise where nobody gets what they want.
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In the comic, the middle latitudes are sarcastically proffered as a compromise between two extremes described by Cueball: day lengths that don't vary that much (as occurs in the torrid zone near the Equator), and the possibility of days with no daylight at all (as occurs in the Arctic/Antarctic zones). However, it is clear that Megan's compromise merely results in seasonal weather that has no interesting or useful features at any time of the year. In particular, winter is singled out as a season that is generally just dim and bleak in the middle latitudes, with days that don't last long and are cold and dull anyway.
  
Cueball starts by wishing to experience two extremes: normal sunrise and sunset, vs. weeks of 24-hour darkness.  Satisfying one or the other condition requires locating either to the Equator or to one of the poles.  Megan proposes a "split the difference" compromise, which turns out to involve dim, bleak winters.  Satisfying the compromise would mean locating in the "middle latitudes".  Thus the bottom caption, "middle latitudes are the worst."
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The title text extends the idea with another spurious compromise, this time between snowy blizzards and warm sunny beaches - both of which are enjoyable in their own ways, but "splitting the difference" and combining the two would result in unpleasant icy slush.
  
The title text extends the idea.  Splitting the difference between "fun" snowy blizzards and "fun" warm sunny beaches would mean having neither, but instead icy wet slush.
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There are other comics that refer to the length of the day, and how it is different each day, a recent one for example is [[2050: 6/6 Time]].
 
 
There are other comics that refer to the length of the day, and how it is different each day, a recent one for example is [[2050: 6/6 Time]]
 
  
 
==Transcript==
 
==Transcript==
:
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:[Cueball and Megan standing and talking, Megan with her arms raised.]
 
:Cueball: It would be nice if the sun could rise and set at normal times. But it would also be cool to experience 24-hour darkness for weeks on end.
 
:Cueball: It would be nice if the sun could rise and set at normal times. But it would also be cool to experience 24-hour darkness for weeks on end.
 
:Megan: Well, what if we split the difference, so all winter everything was normal but slightly more dim and bleak?
 
:Megan: Well, what if we split the difference, so all winter everything was normal but slightly more dim and bleak?
 
:Cueball: Perfect!
 
:Cueball: Perfect!
 
:[Caption below the frame:]
 
:[Caption below the frame:]
:Middle latitudes are the worst
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:Middle latitudes are the worst.
:
 
  
 
{{comic discussion}}
 
{{comic discussion}}
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[[Category:Astronomy]]
 
[[Category:Astronomy]]
 
[[Category:Time]]
 
[[Category:Time]]
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[[Category:Compromise]]

Latest revision as of 23:48, 1 March 2019

Middle Latitudes
Snowy blizzards are fun, but so are warm sunny beaches, so we split the difference by having lots of icy wet slush!
Title text: Snowy blizzards are fun, but so are warm sunny beaches, so we split the difference by having lots of icy wet slush!


Explanation[edit]

Because of the Earth's axial tilt, the apparent daily path of the Sun through the sky - in particular, how long it takes and how high in the sky it gets - is different depending on how far North or South of the Equator you are (your latitude), and also changes throughout the year as the Earth revolves around the Sun. This fact yields two very important pairs of latitudes:

and

The latitudes that lie within these two bands are called the middle latitudes - also sometimes referred to as the North Temperate Zone and the South Temperate Zone respectively.

The Tropics of Cancer and Capricorn are the latitudes beyond which, if you go any further from the Equator, it is no longer possible for the Sun to be directly overhead at any time of the year. Similarly, the Arctic and Antarctic Circles represent the latitudes beyond which it is possible for the Sun not to rise or set at all at some times of the year.

In the middle latitudes - which occur between these extremes - we instead get the rather less impressive phenomenon of daylight simply being a bit longer in summer and a bit shorter in winter.

In the comic, the middle latitudes are sarcastically proffered as a compromise between two extremes described by Cueball: day lengths that don't vary that much (as occurs in the torrid zone near the Equator), and the possibility of days with no daylight at all (as occurs in the Arctic/Antarctic zones). However, it is clear that Megan's compromise merely results in seasonal weather that has no interesting or useful features at any time of the year. In particular, winter is singled out as a season that is generally just dim and bleak in the middle latitudes, with days that don't last long and are cold and dull anyway.

The title text extends the idea with another spurious compromise, this time between snowy blizzards and warm sunny beaches - both of which are enjoyable in their own ways, but "splitting the difference" and combining the two would result in unpleasant icy slush.

There are other comics that refer to the length of the day, and how it is different each day, a recent one for example is 2050: 6/6 Time.

Transcript[edit]

[Cueball and Megan standing and talking, Megan with her arms raised.]
Cueball: It would be nice if the sun could rise and set at normal times. But it would also be cool to experience 24-hour darkness for weeks on end.
Megan: Well, what if we split the difference, so all winter everything was normal but slightly more dim and bleak?
Cueball: Perfect!
[Caption below the frame:]
Middle latitudes are the worst.


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Discussion

I think this is about the fact that in the middle latitudes (such as where Randall lives) The sky can get incredibly grey and dark in the winter. The title text is about how the more mild and/or varying temperatures lead to neither snow nor nothing, instead a half melted slushy substance which has neither the fun of snow nor the heat of nothing. Netherin5 (talk) 17:34, 5 December 2018 (UTC)

Due to light getting bent by the air, any point that has midday darkness will actually have significantly more days of midnight sun than of midday darkness. For the same reason, midday sun occurs farther from the poles than midday darkness. Klausok (talk) 11:49, 6 December 2018 (UTC)

I don't agree with the explanation that 'split the difference' would mean locating in middle latitudes. To me, Cueball already lives there, hence his complaint about the sun not rising or setting at normal times during winter and the caption "Middle latitudes are the worst". Megan's solution would be for normal sun times (longer hours of light) in winter, but the day would be more dim and bleak, so you'd experience less luminosity overall.162.158.89.55 16:01, 6 December 2018 (UTC)

  • I think this comic is a bit more abstract than that...which should be obvious from the fact that they're trying to decide where to move based purely on day length. GreatWyrmGold (talk) 07:14, 7 December 2018 (UTC)

And let's not forget the summers. My corner of the middle latitudes "enjoys" both subzero winters and summers with temperatures that go well over a hundred degrees. (Thankfully, that's Fahrenheit.) GreatWyrmGold (talk) 07:14, 7 December 2018 (UTC)

I live in Sydney which is technically a middle latitude and frequently enjoy ice-slush free beaches. In fact I don't think there has every been ice slush on the beaches or even lakes 172.68.144.121 23:48, 7 December 2018 (UTC)teambob

I think “split the difference” is a reference to Boston, Massachusetts. If you look at where the middle latitudes are in Noth America and “split the difference”, the center runs through the New England region of the United States. The micro climate and proximity to the Atlantic Ocean here cause quick, heavy snow to fall along the coast that then quickly warms into icy slush. Winters in Boston could be described as slightly dim and bleak. The day length is not particularly extreme but it is short enough that the average commuter will travel during some combination of dawn, dusk, and dark for much of the cold season. If you do not make an effort to go outside during mid-day, you can go days without seeing the sun. (Millietea) 11:37, 8 December 2018. (UTC)