insane_alien

You would still need supplementary water but it is not for digestive purposes. your body needs water for other processes(but not much, it could easily be supplied by the digestion of fats and carbohydrates) and the body is leaky. we sweat a LOT. this is why we need to drink so much water. it simply just gets expelled again either for cooling or waste disposal. if you are in conditions where sweating is kept to a bare minimum then your supplementary water requirements will reduce dramatically. as it stands we lose a good litre a day in a cool climate, this needs to be replaced.

its not a choice. its a 'is Mass times time a useful quantity in reality' so far all signs point to no.

you still seem to be miss informed. ITER hasn't achieved breakeven. this is in no small part due to the fact that right now it hasn't even been built yet. ITER isn't scheduled to be turned on until 2018. 18 years in the future. DEMO is a planned demonstration reactor that will follow ITER. its just planned, they haven't really started doing anything about it at all yet. heck, the conceptual design for DEMO isn't due until 2017, and it isn't due to be completed till 2033. so they will NOT be running at the same time. i suggest you actually go and read up about these projects.

when fat tissue is digested by the body it PRODUCES water. it doesn't give a net deficit. this is because the oxygen you breath in reacts with the molecules and specifically the hydrogens to form water. to say that it requires water is just wrong.

LeaderBee, DEMO won't be built until after ITER has and then produced useful results. you speak of ITER as if its already up and running but its not. construction is just beignning really and then DEMO will build on knowledge gained from ITER. ITER plans for a Q value of 10 (it will produce 10 time the break even energy) DEMO plans to have a Q value of 25 (25 times greater than break even) breakeven HAS been achieved. but not for long.

deuterium will not emit any heat on its own. you'd need a fusion reactor to get any heat and we haven't really built one that can get to a Q>1 level yet(its been done briefly but it wouldn't really be worth it). and this is with massive reactors. with fusion, the bigger the reactor the better. smaller makes it worse. you won't really be able to build an energy generator suitible for the scale of the model. the best would be getting an IC engine for a model plane or similar and hooking it up to an alternator.

he meant power density. the energy density of an RTG is actuall quite good but drawing a large amount of power is nigh on impossible. for a large structure like a floating airport you'd need it(the RTG) to weigh hundreds of tonnes.

well, typically you only want the hab section to spin. this is because you want your navigation and other systems to remain nice and stationary so they can work easier. if they're spinning then you need to deal with a moving lock on your navigation stars and a sophisticated reaction control and manouvering system to be able to make mid course corrections without having to stop the rotation. also, with just the hab sections spinning, you can use electricity from solar panels instead of reaction mass. and again, if the whole ship is spinning you have some wierd gyroscopic effects which is the purpose of the contrarotating section, that nullifies the gryoscope effects.

well, it just needs to come down in price. it can already exceed bluray in both capacity and performance. but the real way forward is delivery through your internet connection. you can have as many different quality levels as you like, no shipping costs etc etc. its ideal. all we need is for the movie companies to stop acting like little girls and embrace it rather than fear it.

and it can vary considerably as you can convert a proton to a neutron and vice versa.

current or voltage. because the current is variable. and you'd need a DC to AC converter in there. a capacitor on its lonesome won't do anything.

launching that much mass up there is the big drawback. oh, and if you don't want the rest of the ship to spin in the other direction then you need a contrarotating system of equal angular momentum.

he could always make it balloon based. then you don't need a powersource to maintain buoyancy.

120V capacitors could be of any size really. capacitance has more of a bearing on size than voltage does. a 1pF capacitor to take 120V could be absolutely tiny, on the scale of millimeters. a 1000F capacitor at 120V would be on the order of meters.

and is still works even when it gets out to the point where they cannot hit the mask with the slits

well, you obviously need to have an input of energy to give it more speed so its going to consume energy and hence not be perpetual motion as when you take away the energy input it stops working on short order. i'm not really sure what this is supposed to accomplish.

mr skeptic, surely a sphere would be better than a ring as it would be structurally stronger and could fit the ring inside it. you could also go for a cylinder as well.

singularities don't appear to happen in reality. the fact that relativity predicts these and they are not seen proves there are problems with relativity. the fact that it doesn't work with quantum mechanics either also proves thereare problems with it. It is very important to note that despite these inconsistencies with reality, it does not mean that relativity is suddenly completely useless. its still a damn sight better than newtonian mechanics and can be used in conditions where whatever model would provide accurate representations of reality will simplify down to it.

it doesn't have any named definition according to wolfram alpha and i can't find references to it. it probably just isn't a useful value.

you said i was insane because i did yoga. and my name is just that, a name. it bears no relation to my mental health. if i turn the tables and take your name as literal then you must be insane as you think you are a television broadcast format. really, you need to drop this line of attack as it makes you look bad.

it was Jesse Beams who done the 23millionRPM expeiment. it was a 0.8mm diameter steel ball and was done in 1946.

he didn't say that. Taktiq only said the theory that religion is the sole cause and effect of psychosis is wrong. and he is right. he didn't say that religion couldn't cause psychosis in an individual case, just that it was not responsible for ALL of them. and keep in mind that PAL/SECAM thinks that I am insane because i regularly do stretching exercises.

yes but only very very slightly. probably immeasurably and definitely swamped by the moons influence.

doesn't support for 7.10 run out fairly soon if it hasn't already?

velocities aren't that useful. but kinetic energy is, so that is what is listed. as it happens you get 5.93*10^6 m/sfor 100eV a tv is up nearer 1.8*10^6m/s (assuming 1keV energies.) with the paper swansont linked to you get 1741m/s and particle accelerators and the like do emit narrow band velocities due to the way the plates and magnetic fields are arranged. electrons with significantly differing velocities get drawn off to the side or miss an appeture. anyway, the velocities aren't typically useful in the energy ranges commonly dealt with. but expressing the kinetic energy of the electron in eV is. the energy is directly related to the velocity of the electrons.