Search found 99 matches

by brötchen
Sat Oct 10, 2009 8:27 pm UTC
Forum: Science
Topic: fantasies about an underwater station
Replies: 70
Views: 4561

Re: fantasies about an underwater station

At 50 bars partial CO2 pressure, not 50 bar ambient pressure. CO2 becomes a problem for breathing way before this concentration (sadly, it would be nice if you could have it simply condensing out). You will want to keep about 0.2 bar of oxygen (as we have at sea level) and less than 0.01 bar CO2. T...
by brötchen
Sat Oct 10, 2009 3:00 pm UTC
Forum: Science
Topic: fantasies about an underwater station
Replies: 70
Views: 4561

Re: fantasies about an underwater station

after some research it turns out that neither the sabatier nor the bosch process are of much use in an underwater scenario because they require almost pure co2... so they only make sense when water is a precious resource...
by brötchen
Sat Oct 10, 2009 1:35 pm UTC
Forum: Science
Topic: fantasies about an underwater station
Replies: 70
Views: 4561

Re: fantasies about an underwater station

http://www.ecls.de/ under "elctrolysers" i found the claim that for 3 persons you would need 830 watt's of power to supply enugh oxygen. whats wirde is that they only have so called "sabatier" devices for co2 reusal and no bosh reactors wich would seem to be easier ( with a sabat...
by brötchen
Sat Oct 10, 2009 11:08 am UTC
Forum: Science
Topic: fantasies about an underwater station
Replies: 70
Views: 4561

Re: fantasies about an underwater station

separate the CO2 with a bulkier but longer lasting process like absorbing it into a special solvent.

do you know anything specific about such processes or some key words i might google ? would like to read about that.
by brötchen
Sat Oct 10, 2009 10:22 am UTC
Forum: Science
Topic: fantasies about an underwater station
Replies: 70
Views: 4561

fantasies about an underwater station

I invite you to collectively fantasize about a hypothetical underwater station and how it might work. I intend this topic to be somewhat of collaboration so if anyone ads something interesting to the plan I will edit this post. So here is what I got so far: I think the coolest version would be a sta...
by brötchen
Fri Oct 09, 2009 3:26 pm UTC
Forum: Science
Topic: need to get a beta source within a few weeks
Replies: 24
Views: 2327

Re: need to get a beta source within a few weeks

i was totaly sure tritium would be alpha decay only... but wiki says its true that its beta... im confused now. and actualy tritium is REALY hard to get in germany ( i know becaus i tryed to get one of those glow rings) geting it in pure form would probably even be hard for universities :roll:
by brötchen
Thu Oct 08, 2009 9:43 am UTC
Forum: School
Topic: censorship slows internt to snail like speeds...
Replies: 19
Views: 2378

censorship slows internt to snail like speeds...

hi the teachers at my school are constantly barging about the fact that we are getting supper high speed Internet access for free ... (apparently T.com decided it would be good for the image to donate 1 internets to our school :shock: ). but we absolutely cant use it !!! the reason is that we have s...
by brötchen
Wed Oct 07, 2009 8:05 pm UTC
Forum: Science
Topic: need to get a beta source within a few weeks
Replies: 24
Views: 2327

Re: need to get a beta source within a few weeks

Do you have any scintillating material? You could do it the classic way, too: leave it in a dark place with a photographic plate (or film, these days) Uranium is an alpha emitter, anyway. nah... i will have to wait till friday. and uranium is actualy i mixed sourc ( alpha beta and gama but mainly b...
by brötchen
Wed Oct 07, 2009 6:49 pm UTC
Forum: Science
Topic: need to get a beta source within a few weeks
Replies: 24
Views: 2327

Re: need to get a beta source within a few weeks

i just found some thing that looks kinda like the uranium mineral torbernite is there i quick way to find out if there is radiation without a geiger counter ?(tried to pour a glow in the dark oiment over it and look for flashes..got nothing) (if im lucky i will get acces to the shools geiger counter...
by brötchen
Wed Oct 07, 2009 5:16 pm UTC
Forum: Science
Topic: need to get a beta source within a few weeks
Replies: 24
Views: 2327

Re: need to get a beta source within a few weeks

Nah, it'd probably be a pain to concentrate. well i got 4 people and about two weeks so if there is a way atall I might be able to organize the man hours needed. if i wont find a way to get beta radiation in time i will probably just experiment with solar concentration in combination with the linke...
by brötchen
Wed Oct 07, 2009 1:29 pm UTC
Forum: Science
Topic: need to get a beta source within a few weeks
Replies: 24
Views: 2327

Re: need to get a beta source within a few weeks

is there a way of concentrating the potassium 40 from the potassium chloride ? i gues the stronger my beta source is the better my resluts will be..
by brötchen
Tue Oct 06, 2009 6:42 pm UTC
Forum: Science
Topic: need to get a beta source within a few weeks
Replies: 24
Views: 2327

Re: need to get a beta source within a few weeks

but how do i get my contraption inside of cathodray tube? i might be wrong but from what i understand the electrons dont actualy get out of the tube . http://www.google.com/patents?vid=685957 in the patent under fig.4 there is a setup with some sort of tube but it isnt a cathodray tube but some sort...
by brötchen
Tue Oct 06, 2009 6:13 pm UTC
Forum: Science
Topic: need to get a beta source within a few weeks
Replies: 24
Views: 2327

need to get a beta source within a few weeks

hi I'm in need of some sort of beta radiation source for a science project (I'm planning on doing some experiments with Tesla's patent on utilizing "radiant energy"). i would only need like 10 times Background radiation or something like this i think. Stuff from United nuclear wont work (I...
by brötchen
Tue Sep 01, 2009 1:20 pm UTC
Forum: Science
Topic: A Helium baloon to space.. (logistics, dynamics...)
Replies: 16
Views: 2582

Re: A Helium baloon to space.. (logistics, dynamics...)

AWSOME! just had to say it ... i was thinking about similar things before and even experimented with the thermal properties of mylar. i used emergency blankets ( they are reflective) but my ultimate goal is to use uncoated mylar as an outer layer and some sort of black stuff as sun absorber on the i...
by brötchen
Mon Aug 31, 2009 6:31 pm UTC
Forum: Science
Topic: 1g space travel
Replies: 31
Views: 5449

1g space travel

there is a similar thread already on this forum but my scenario is just a little bit different and i don't want to hijack threads...so. imagine you have a space ship that accelerates in such a way that the passengers experience a constant acceleration off ~10m/s² (1g). now how long would it take thi...
by brötchen
Mon Aug 31, 2009 4:12 pm UTC
Forum: Science
Topic: Some thoughts on time travel
Replies: 9
Views: 1399

Re: Some thoughts on time travel

defining the speed of movement trough time as t/t feels kinda wrong ... i cant really tell you why but it just seems wired to me :cry: if this is true ( in any meaning full sense) this would prove that time travel is impossible. i get the feeling that the words of human language are insufficient whe...
by brötchen
Mon Aug 31, 2009 3:35 pm UTC
Forum: Science
Topic: LHC's problems caused by the future?
Replies: 4
Views: 1275

Re: LHC's problems caused by the future?

I usually believe that for a certain thing the simplest explanation is most probably true i do so too and this doesn't sound very simple ... what would be way cooler ( i think it would be...) would be if when they fire it up they send a particle back in time and this interference caucus all the tro...
by brötchen
Mon Aug 31, 2009 3:27 pm UTC
Forum: Science
Topic: Some thoughts on time travel
Replies: 9
Views: 1399

Re: Some thoughts on time travel

Regarding question 3: specifically, 1 meter is approximately 3.33 nanoseconds. Or, 1 second is precisely 299792458 meters. so we are all moving trough time at C ?cool :shock: is there a way to use the 4th dimensional momentum of something as a power source if we could create something like a "...
by brötchen
Mon Aug 31, 2009 2:12 pm UTC
Forum: Science
Topic: Some thoughts on time travel
Replies: 9
Views: 1399

Some thoughts on time travel

hi there I'm new here :D ok I have been watching “the melancholy of haruhi suzumiya” lately and began thinking about time travel ( if you haven't seen “the melancholy of haruhi suzumiya” I highly recommend you watch it ) first of all : is it possible to build a device that can detect unusual movemen...

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