/sci/ - Science & Math

This is the problem. If I post a boring image people ignore the thread, if I post something controversial people lack fucks.

>>3633008
You need to try better grapes and peaches, sir. They are that good

I disagree with the placement of watermelons though.

>>3633018
Buying books? Psch.
I have a pretty decent library nearby, but thanks for the idea. I have all the books I need at the moment.
>>3633024
Randall Munroe. Now I look, a lot of that chart is wrong. Pomegranates aren't difficult, lemons and oranges are delicious and green apples should definitely be tastier. Pears suck.

I have £100 and I want to spend it on something science based, before I fritter it away on food and water or something. All ideas appreciated.

Current ideas:
-Buy a low cost phone capable of video calling and a cheap RC helicopter, create DIY first person view UAV
-Donate monies to Mad Sci and his glorious hamster based endeavors (I'll probably do this with the change anyway)
-attempt to build some kind of autonomous arduino based small vehicle and give it free reign

>>3603982
You don't know me outside of /sci/, but we've talked before. I use this trip sometimes but normally only in mad sci's threads.

>>3560290
like a bug would be more accurate.
http://en.wikipedia.org/wiki/Byford_Dolphin#Diving_bell_accident
Diver D4 was shot out through the small jammed hatch door opening, and was torn to pieces. Subsequent investigation by forensic pathologists determined D4, being exposed to the highest pressure gradient, violently exploded due to the rapid and massive expansion of internal gases. All of his thoracic and abdominal organs, and even his thoracic spine were ejected, as were all of his limbs. Simultaneously, his remains were expelled through the narrow trunk opening left by the jammed chamber door, less than 60 centimetres (24 in) in diameter. Fragments of his body were found scattered about the rig. One part was even found lying on the rig’s derrick, 10 metres (30 ft) directly above the chambers. His death was most likely instantaneous and painless.

I don't believe you can have a painless death, but it was definitely pretty fast.

>>3560229
>Costanza
>heterosexuality
>>3560230
presumably it can only take pretty low voltages though, right?

>>3560210
like what?
If the hose gets cut or the pump dies, a one way valve slams shut.

>>3560208
>>3560192
you two can argue for a bit and we'll watch/learn.

>>3560192
:o
I was under the impression there was virtually no resistance, note nonewhatsoever.

>>3560173
Scientists are practitioners of science: People using the scientific method. It doesn't matter what they're studying, if they use the scientific method they are a scientist.

http://en.wikipedia.org/wiki/Electrical_resistivity_and_conductivity#Resistivity_of_various_material
s
Silver, then copper, then gold.

A superconductor conducts with little to no resistance compared to any of these. We don't have any that operate at room temperature yet, unfortunately.

>>3560148
OH SNAP
>>3560149
Every science is applied physics. Maths is not a science.

Not really. He shouldn't be seen as any less reputable though, and the whole elitism thing you get here is retarded.

>>3560106
The air inside is going to be pushing out the same amount as the water outside is going to be pushing in, as it's pressurised to the same level. It doesn't kill the people inside (as we're apparently rather good at pressurising slowly, less good at depressurising) and essentially avoids the whole problem.

I have nothing to add other than that these threads are by far the bestest things on /sci/. Keep up the good work, sir.

>>3473751
Normally this happens all the time without issue. This time, some politicians decided to stand up and say: "Umm, long term this whole 'borrow more money' method may not work out." So they are holding off on raising the debt ceiling until we can better align our "bills" and our "income". There's two ways to do this: either you lower your bills or you raise your income. Either you pay less money out, or you bring more money in.
This is where the argument happens. Democrats (traditionally) would prefer to bring more money in, so they'd like to "raise taxes". Republicans (traditionally) would prefer to have lower bills, so they'd like to do "spending cuts".
So the argument now is "How can we find a compromise where everyone is happy?" We haven't (yet, hopefully) found that compromise.
If we don't find the compromise, and we don't raise the debt ceiling, then we'll have a bunch of bills due and not enough money to pay them. At this point we'll have to start prioritizing who gets the money we do have. Should it be seniors on Medicare? Should it be active duty military? Should it be people we owe interest to for a loan payment?
This is just like our credit card example if the credit card company doesn't raise our limit. Do we pay our rent? Do we pay our car payment? Do we pay back a guy we borrowed $50 from?
And the repercussions are this: whoever we DON'T pay, how does that negatively affect us? Will we be able to get more loans? Will people lose trust in us and a government? Etc. So the outcomes could be nothing or they could be disastrous. No one knows for sure.

This isn't mine:

Pretend you have a credit card. And this credit card has a limit, we'll say $1000. This credit card is pretty near maxed out and you don't really have any cash. You need to buy some stuff soon, and you know that between now and August 2nd you need to buy some things, and you have no choice but to buy them on the credit card. At that point the credit card will be completely maxed out.
This credit card is our debt ceiling. We will hit the limit of our borrowing limit on August 2nd.
Now let's continue further. We know we have some bills next month, and we also know that we have some cash coming in, but when we look at what we have coming in vs what we have to pay, we don't have enough to cover it. Let's just say we know we'll be short by $100. So now we know ahead of time that we'll be short, and we only have one real option: call the credit card company and ask them to raise our limit.
This is what the debt ceiling legislation is trying to do: raise our credit limit.

Cont.

>>3473691
Ahah, should've recognised that one :s
>Remember, if you have a heat gun, you can soften plexiglass to the point that it can be bent into a curved shape that matches the hull curvature.
True. I'll try that on the side window and if all goes well the habitat can be floated back up and modified for fabulousness.
>sand as ballast
Glorious. I'm not sure how I'd make the tray, but if/when I do, that's a much better solution than the oil barrels and iron thing I was planning.

>>3473652
Ideally, it'd have a curved perspex panel in the roof to let light in. Realistically, it's probably going to have a porthole on the side. Either way, there'll be ways of looking out.
The tube is actually metal, which makes anchoring it difficult. IIRC it worked out as needing about 40 tonnes of ballast before being filled, which could be the most difficult part.
It's going in so the moon pool is at about 18 or 19 feet. I know it could be 21, but this way if I mess up and put it on a shifting sand bank I can get out without risking the bends.
>>3473657
Looks like I do. What's that?

>>3473597
Looking at prices, a good approach to building a station for minimal cost might actually be to buy an old 8-10ft shipping container, weld the door shut, and then cut a hole in the bottom. They seem to be fairly sturdy and cheap (compared to this, at least)

>>3473587
Forgot to say: It's going to be oriented horizontally. Should be clear, but it might not be.

>>3473518
I wasn't sure if he was just distant. That thing's huge.

I'll take water into account when planning from now on. I think I can probably get about 1500L of storage space for it

At the same time, I really want to keep it outside in a balloon like that algae based air filter. Too much choice

>>3473443
:o

Do you know what scale that is? Looks very interesting

I've decided that at some point in the next few months I'm going to try and confine myself to a 10*3M room and see how long I can survive and what rate I use resources, to see if I can work out how much space I need to sacrifice for it when I try building a habitat. I've forgotten to check before: Will I need a freshwater tank, or is there some way of removing salt from water efficiently in small-ish quantities? I'm happy to use chlorine tablets if there's some way of dealing with the salinity.

>>3468239
Nope. Uploading is phuckslow though.