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Totally off-topic thread
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| Mosfet | Date: Friday, 04.11.2016, 15:36 | Message # 3271 |
 World Builder
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Italy
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| Quote Salvo (  ) funny thing is that it was made by Italian engineers
I'm not engineer, but that's something I don't find it funny at all  
"Time is illusion. Lunchtime doubly so."
Douglas N. Adams
My mods
Asus x555ub: cpu i5-6200u - ram 4gb - gpu nvidia geforce 940m 2gb vram
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| midtskogen | Date: Friday, 04.11.2016, 16:46 | Message # 3272 |
 Star Engineer
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Norway
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| The guys at ESA has calculated the landing as 80% successful and the whole mission as 96% successful. The article giving these calculations is named "Spacecraft are tricky … and engineering is an art form", but "Spacecraft are tricky … and communication is an art form" would be more fitting. An art form which they don't master, and they don't even notice the giggling they cause, I think.
NIL DIFFICILE VOLENTI
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| Salvo | Date: Saturday, 05.11.2016, 11:15 | Message # 3273 |
 Star Engineer
Group: Local Moderators
Italy
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| Quote Mosfet ( ) I'm not engineer, but that's something I don't find it funny at all
Nothing, just ignore what I said 
The universe is not required to be in perfect harmony with human ambition.
CPU: Intel Core i7 4770 GPU: ASUS Radeon R9 270 RAM: 8 GBs
(still don't know why everyone is doing this...)
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| Antza2 | Date: Sunday, 06.11.2016, 13:36 | Message # 3274 |
 World Builder
Group: Global Moderators
Finland
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| I have a thing i want your opinion on. I'm designing this water extractor to be used on Mars and the basic idea right now is to drill through the regolith into a water deposit and collect the water vapor that is formed when the ice comes into contact with the martian atmosphere. The collector is going to have an umbrella-like cover over the borehole that funnels the vapor to the top of the structure and into a condenser. The problem right now is to stop water vapor from condensing into the structure itself. My solution to this is to cover the structure with some hydrophobic material to stop water molecules from touching it. Would this work in practice though? What do you think?
Go to antza2.deviantart.com for cool photos!
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| spacer | Date: Sunday, 06.11.2016, 14:15 | Message # 3275 |
 Star Engineer
Group: Users
Israel
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| Antza2, mmm for what i know about chimestry right now. you can use some type of carbons chains molecules that dont have OH or if they have it, you need chain of 5 carbons or above. because if you dont have OH the water molecules will not "want" to do hydrogen bonds or even do bonds at all with that material.
something i can think of is maybe Pentanol or hexane or Octane or any kind of Ether. in these molecules there is big chain of carbons.
wait for Watsisname, answer maybe he can talk about it more!!
in my examples, for pentanol there is OH meaning he can do hydrogen bond with the water but its weak compered the the hydrophobe carbons-hydrogens chain.
i hope i am right...i learned it in chimestry recently
but in mars temperature and pressure this may not working...my knowladge is limited right now
"we began as wanderers, and we are wanderers still"
-carl sagan
-space engine photographer
Edited by spacer - Sunday, 06.11.2016, 14:30 |
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| midtskogen | Date: Sunday, 06.11.2016, 18:15 | Message # 3276 |
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Star Engineer
Group: Users
Norway
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| Oslo today. Silky snow, -6C and a pale sun shining through a gentle snowfall. In early November there are rarely such nice skiing opportunities.
NIL DIFFICILE VOLENTI
Edited by midtskogen - Sunday, 06.11.2016, 18:15 |
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| spacer | Date: Sunday, 06.11.2016, 18:32 | Message # 3277 |
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Star Engineer
Group: Users
Israel
Messages: 1258
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| midtskogen, very cool! most of europe is in cold wave right now while here its gonna be 28c on wedensday or +9c anomaly.
"we began as wanderers, and we are wanderers still"
-carl sagan
-space engine photographer
Edited by spacer - Sunday, 06.11.2016, 18:32 |
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| Hornblower | Date: Sunday, 06.11.2016, 19:27 | Message # 3278 |
 World Builder
Group: Users
United States
Messages: 714
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| Here in America, stores are starting to put Christmas stuff up, it's about 70*F (21*C) whereas around this time, it is usually about 50*F (10*C). Climate change...
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| Watsisname | Date: Sunday, 06.11.2016, 22:01 | Message # 3279 |
 Galaxy Architect
Group: Global Moderators
United States
Messages: 2613
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| Instantaneous temperature at a location isn't easily attributable to climate change. Weather vs. climate and all that. +11C anomalies aren't hugely significant, and you can find larger negative anomalies than that in other places right now.
However, most of the northern hemisphere and the world is currently warmer than climatology, and that is attributable to global warming. Especially averaged over a few weeks or months:
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| Hornblower | Date: Sunday, 06.11.2016, 22:04 | Message # 3280 |
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World Builder
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United States
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| Watsisname, on your maps, looks like the colder areas are over Russia, which only partially makes sense. It makes sense in the way that Russia is mostly wilderness and therefore, the air is less polluted. However, this doesn't explain why it's colder than average.
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| Watsisname | Date: Monday, 07.11.2016, 00:31 | Message # 3281 |
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Galaxy Architect
Group: Global Moderators
United States
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| It's mostly a matter of what the weather is doing -- the motion of air masses and the atmospheric circulation. In the mid and high latitudes, a really good way to get an indication of whether temperature is going to be warmer or colder than normal is to look at what the jet streams are doing.
When the jet stream meanders poleward (ridging), it brings warmer air, and when it meanders equator-ward (troughing), it brings colder air. This matches up pretty well with the observed surface temperature anomalies. Check out the northern Pacific in particular.
Much of North America is under a very large ridge. That's why it's warmer there. Siberia is under a trough, with very high pressure. That brings in cold air.
The high pressure is also important: High pressure is associated with cooler and drier air. Making air colder tends to dry it out since it can hold less moisture. Furthermore, drier air is easier to cool, because of the greenhouse effect. Water vapor is a greenhouse gas, so dry air allows heat from the surface to escape to space more easily.
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| Hornblower | Date: Monday, 07.11.2016, 02:04 | Message # 3282 |
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World Builder
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United States
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| Watsisname, ah, of course! Also, with autumn, there are strong winds. These are very annoying because the airport I fly out of has a north-to-south runway, so I get strong crosswinds this time of year! I went flying last week, and I could barely get the plane to land on the runway. I talked to another pilot who tested out the pattern and he decided he wanted to stay on the ground as well.
Edited by Hornblower - Monday, 07.11.2016, 02:06 |
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| Watsisname | Date: Monday, 07.11.2016, 04:00 | Message # 3283 |
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Galaxy Architect
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United States
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| Oh cool, I had no idea you are a pilot. That's awesome!
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| Hornblower | Date: Monday, 07.11.2016, 04:26 | Message # 3284 |
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World Builder
Group: Users
United States
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| Watsisname, I posted some images a while back, check them out if you're interested.
Edited by Hornblower - Monday, 07.11.2016, 04:27 |
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| midtskogen | Date: Tuesday, 08.11.2016, 04:52 | Message # 3285 |
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Star Engineer
Group: Users
Norway
Messages: 1674
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| Whatever the outcome today in the US, you have my sympathy.
NIL DIFFICILE VOLENTI
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