insane_alien

why use 4 axis when 2 will do? it also seems easier to write a+ib than [0 b c d]t sorry i don't know how to use LaTeX

generally they energy per molecule is pretty small compared to the overall motion of the molecules. sound can be used to agitate a mixture of reactants that would increase the rate of reaction. and then there is sound providing a trigger for a reaction (like a very sensitive explosive) the sound initially speeds up the decomposition of the compound until it is enough to sustain a runaway chain reaction. it could maybe also be used in separation methods. thats about all i can think of. in general, no. in a few specific cases, yes.

i would suggest that you look at older, simpler computing devices first. they operate on exactly the same principles but just use different switches and storage methods.

well, we do have a moonbunny on the forums. maybe its her i'll just go lock my self in a nuclear bunker before she turns upand notices the crack about her age.

because you are dumbing it down a bit(not to say the audience is dumb though) it will lose some of its accuracy but try to keep it close. telling them to ask for clarification if they don't understand something during the presentation. although, if you do that you need to be careful not to go off on a tangent. as ecoli said, pictures are gold. use them wisely though. if they are too complex nobody will understand them and if they are too simple then they will not convey any information. another thing i do is not to make a full plan like 5minutes on a 7 on b and then 3 on c. just have a list of topics and/or you want to get through and wing it. it is much better and you don't have to cut yourself off. a bit of humour in the presentation will also help, both you and the audiences attention. it doesn't have to be stand up comedian level stuff just a little gag or one liner related to the presentation. google will help with this. don't use too many though. also, don't be afraid of putting some maths in. only, for the variables you will be better using words than the proper symbols. a lot of people have a mental block on algebra if it is like that. and if it is really complex take some time and describe the basics. most of them will get it.

...that would make sense. didn't even think of that line of thought. kind of staring me in the face now i know of it

when i was driving through france the other week(weird driving on the right side of the road, very weird) i noticed something weird about the clouds infront of me, there was three layers of clouds, nothing unusual there, the top and bottom layers were white and the middle one was grey. this struck me as odd. because all three layers had direct sunlight (it was nearing sunset so the sun as off to the side and they weren't particularly close packed.) yet they appeard different colours. surely if they are all droplets of water then they should be the same colour. i can't figure out what caused the colour in the grey colour but i'm thinking dust. ami i right or talking a load of rubbish? P.S. we really need a meteorology subforum

i just signed up with it. not actually managed to listen to anything yet though. EDIT: okay, i got it working now SFN group sounds good edit edit: oh yeah, almost forgot, my profile is at http://www.last.fm/user/insane_alien

since your new, i'll explain something, farsight doesn't believe in time or much else other than space. he is, in honesty, nuttier that a squirrels bowl of crunchy nut cerial topped with peanutbutter with bits of peanut brittle in it with a coating of crushed nuts.

you find me some negative energy and i'll bring a torch.

would appear to be a hack.

whats the email addy of your best man, i want to give him ideas for the speech

congrats man.

how do you explain the photoelectric effect? why is there a threshold frequency if there are no discrete photons?

trans, where the hell did you come up with that? i don't know of anything like 'freezing inertia' certainly didn't cover it in thermodynamics lectures.

actually, out eyes are most sensitive to green. this is why red an blue lights are used where night vision is important so your pupils do not shrink as much.

http://en.wikipedia.org/wiki/Mpemba_effect this will start you off and give a basic overview of it. the references go further indepth than the wiki article so you can try them if you want something more technical.

fry up

just basic trignometry actually.

well, the thing is, the less stuff you have, the worse it is going be at retaining heat in the manner you want. where you draw the compromise is your desicion and i don't have the details necessary to work out a good one. have a look at this http://en.wikipedia.org/wiki/Storage_heater and google for it to get some more indepth links. this is basically what you want except you want a solar powered one.

big tank of water painted black would do the trick. iron has a low heat capacity and would not hold heat very long. water has a high heat capacity and can hold heat longer. this is why coastal areas are hotter than inland places in the winter and colder in the summer.

you might get away with directional antennas and a central router, might be worth getting a high bandwidth one. for this to work you will need line of sight for the more distant users. speeds might not be great and packets will drop. a high speed connection to the net is likely to be the better choice.

then why the hell would you need to measure the velocity?

yeah, i've seen that one before. i've also seen directions for cutting through a field(though on the satellite, there is only one gate) and driving for 36 miles on train tracks before cutting across the platforms. i think i'm going to go with the oldfashioned method of a paper map and a pencil.