Radical Edward

sorry I was fiddling with it. you should see it now.

scuse me while I attack your bandwidth the kawaii picture of Gordon Freeman I did myself. just playing with reflections and shadows in photoshop. that's me on mars, in the corner there. I think that was Endurance crater behind me.

caesium, lithium. coat with wax and stick em on an arrow.

most transport mechanisms would run into massive conversion losses. i.e. you would lose most of the energy converting the electricity into a laser and then back again. Of course, if you have no way of transporting your energy, i.e. a big solar array in space, then this is the way to go, but for terrestrial energy transport, electrical wires are really the best solution. Optical Fibre transport would run into problems because of nonlinear effects in the medium limiting the carrying capacity of the fibre. One possibility is the ionisation of air using a UV laser, and then imposing a very large potential difference across two points of the lasers' path. This would result in a kind of controlled lightning, and because the air is pre-ionised you wouldn't need a PD as large as with conventional ligtning. Containment would be absolutely horrible though, and you would have to evacuate a massive region around the path of the laser, and you might get alot of arcs, losing a load of energy. in short, it would just be easier to lay a wire.

well we can see from the spectral distribution that the CMB is a black Body spectrum. and since Black Body spectra are dependant only on the temperature of the object, and not on anything else, such as colour or material properties of the materials emitting the spectrum, then we adjust the temperature in the calculations in order to find the temperature that produces the same spectral profile. alternatively you can differentiate it and find the point where the differential of the BBS hits zero in the same place as the peak of the observed spectrum. these are basically equivalent, but it is easier finding a zero on a graph. basically just use Weins displacement law as described above.

no' date=' I think his basic answer would be "a diode is an electrical component that only allows current to pass in one direction" your description there is of a solar cell. Photodiodes are a bit different in that they [i']allow[/i] current to flow when illuminated by light - but do not generate current themselves. just a hint by the way, wikipedia is brilliant for things like this http://en.wikipedia.org/wiki/Main_Page

The critical thing about the speed of light being constant postulate, is that it is only a spatially and temporally local postulate. i.e. the speed of light is the same for all observers, right here, right now. The simplest explanation for this I can give, is the way we derive the speed of light which we do from Maxwell's equations. It turns out that c = 1/(sqrt(epsilon*mu) where epsilon and mu are the permeability and permittivity of free space respectuvely. Both of these constants are invariant with the velocity of the observer, and so it follows that the speed of light is also invariant with the velocity of the observer. If Maxwell had lived a bit longer, odds are that he would have cracked (special) relativity before Einstein did, because much of his investigation was headed in that direction anyway. None of this however stops the speed of light being different somewhere else, or at a different time. However there would be observable ramifications if this were the case. For example, the energy of a photon is closely linked to the wavelength, and thus the speed. since the wavelength is dependent on speed, changing the speed would alter the spectrum emitted by atoms. It would also alter other constants, such as the fine structure constant, which would impact on fusion and fission rates and so on. none of these things are observed and so it appears that c is not only the same for all observers at a particular spacetime location, but the same for all observers everywhere and everywhen.

bit too bright for me.

do I have to say *hint hint pm plz*

aww but you have to pay for those things

you can get ultrabright LEDs now too. cost a bit though.

my computer has a really cool transparent (read "no") case.

best thing I ever did in a lab was heating a pipette. This was in biology and the pipettes were thick glass with a very narrow bore. anyways, you heat up the tube until one end is red hot, and then rapidly dunk that end in water. the water boils around the glass and has only one place to go; up the tube. This has the glorious effect of launching a stream of boiling water across the room and shattering the pipette, much to the chagrin of my teacher, and to our amusement.

but it is often important that money is actually spent. All of that money supports various industries in those regions, from leatherworking through to horse care, and the removal of the hunts will destroy all these livelihoods overnight, unless those people find something else to do. The problem then though is that the rich aristocrats who partake in this sport are now just going to take all their money to france and other places where hunting is still legal.

tories and republicans?

I see no reason in principle why it could not also be the fault of the male, however it does tend to be the fault of the female, and this is supported by obseravtion of increasing incidence of Down's with female age, and no linkage to male age.

I see no reason in principle why it could not also be the fault of the male, however it does tend to be the fault of the female, and this is supported by obseravtion of increasing incidence of Down's with female age, and no linkage to male age.

I know, I forgot to add "all"

I know, I forgot to add "all"

but you have to bear in mind now, that every call has an extra c21 in it, so when meiosis takes place, some will have 2 21s in them, and some will have 1 21 *assuming no more errors) so it is inheritable. http://www.trisomie21.de/fertility_trisomy21_1989.html

but you have to bear in mind now, that every call has an extra c21 in it, so when meiosis takes place, some will have 2 21s in them, and some will have 1 21 *assuming no more errors) so it is inheritable. http://www.trisomie21.de/fertility_trisomy21_1989.html