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midtskogen
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09 May 2018 03:47

A good site for information on ongoing eruptions is http://www.volcanocafe.org/.
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midtskogen
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12 May 2018 05:46

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12 May 2018 12:55

This is big news!
 
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18 May 2018 22:44

Live view of fissure erupting.  The sound is amazing.

 
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20 May 2018 14:02

This is REALLY big news!
91 billion light-years of observable universe on the palm of my hand
 
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midtskogen
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21 May 2018 03:31

I once went to the end of the lava flow during an eruption of Etna.  The sound of an eruption is amazing.  Like the entire mountain was breathing and panting.
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27 May 2018 19:00

By Stephen M. Cameron -- August 27, 2014
Procedural Gas Giant Planet Textures.Gif
Procedural Gas Giant Planet Textures.Gif (620.97 KiB) Viewed 1298 times

Take the curl of the gradient of a noise field to produce a chaotic but divergence free velocity field.

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Watsisname
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27 May 2018 23:26

Take the curl of the gradient of a noise field to produce a chaotic but divergence free velocity field.


I think it should be just the curl of the field, which is automatically divergence free.  The curl of a gradient on the other hand is simply zero and wouldn't be useful. :)  That's pretty cool though!
 
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midtskogen
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22 Jun 2018 00:18

Happy summer solstice!  We're finally heading towards darker skies again.  Here's a timelapse of last night from Oslo.  Sunset was at 22:46, sunrise at 03:53.


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22 Jun 2018 01:21

This is good new for me in Aus, I hate winter and looking forward to longer and warmer days.
 
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22 Jun 2018 06:02

Nice timelapse!  Do you find it hard to sleep at this time of year, or do you block the light out with good shades?  

Here it is dark for about 4 hours, but the Sun at its lowest is -17.9° which is technically still twilight.  I guess that means I live just inside the "twilight circle". :)
 
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22 Jun 2018 06:58

I don't know how you could live though winters at those latitudes.

I find it hard enough with only 9 about hours of day light at the peak of winter. 
 
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midtskogen
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22 Jun 2018 11:09

I have shades and have no issues with the light anyway, but it's tough to get the kids in bed before 23:00, not to mention to get them up at 07:00.  I've found that after 3 months or so without darkness to speak of it's getting on my nerves, but for that I need to be at higher latitudes.

I don't think my sleep pattern is much affected by daylight.  I struggle when I change time zones.  Tomorrow I move 9 hours, and I'll have a week of insomnia again.

EDIT: No darkness, but still dark enough for some meteors: 2018-06-20 00:05UTC (near the right edge of the frame)
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22 Jun 2018 22:25

I mean more of the winter time. Long day hours I quite like, it effects my sleep for the better as it shortens my sleep cycle to something more normal in the 6-8 hour range.  In winter my sleep blows out to 10-12 hours just to feel alert. Continuous long hours of darkness makes me extremely fatigued.  14-15 hour of dark in southern parts of Aus is bad enough, can't imagine around 20 hours of dark!
 
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23 Jun 2018 04:49

Actually, there are no places where you get 20 hours of darkness and still full daylight.  If it's dark 20 hours, then you only have four hours of twilight and the sun doesn't rise, and if the sun is up 4 hours, you also have several hours of twilight in addition, bringing down the number of hours of darkness.

I'm on a flight to San Francisco now, and will get a taste of dark nights again soon. :)
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