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krtbs

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  1. Hello readers and welcome to another HOW-TO article. I originally was planning on doing the CVS Disposable Camcorder Hack, but it's only 90% done. To answer questions of can it be reused?: Yes, it can. But if you want to see it in action, I'll have it out and working at the first ever Hackaday meetup on Thursday. Come on out and see how it's done or if you can't make it, I'll have it up next Tuesday for you guys.But now we're talkin' audio. Sweet crisp sounding liquid music�.coming from our iPods/DAPs of course. A lot of us are still probably using an old school tape deck and cassette adaptor to hook up our iPods to our car. However, with some modding, a few bucks, and a car of course, you can make a permanent auxilary jack for your car.So how? Well, it's easy enough. It just depends on your stereo situation.If you have an aftermarket head unit, it probably has a good chance of having auxilary input for your PS2, iPod, or whatever. If this is the case, read on:You'll want to find a good spot on your dash near your stereo for the jack. Just pick up an RCA red and white audio to minijack (1/8" whatever you wanna call it). Then get a minijack extender so you now have a female minijack port to plug your iPod/Minidisc/Monkey into. Finally, get some kind of washer/bolt mechanism to lock the minijack into place. Superglue works if you're dead broke too. Using a dremel or similar cutting tool, drill out and sand out a nice little hole for your input jack. Once done, hook everything up to your car stereo and test it to make sure it works fine. You don't want to have to keep going back in. Then, disconnect the red and white RCA ends from the head unit. Mount your minijack port properly and make sure it's secure and that you like the way it looks. No turning back now! Finally, reconnect your RCA red and white cables to the head unit, hook everything back up, and you're good to go. You can just run a basic minijack to minijack cable from the iPod into the Auxilary jack. It's now clean, crisp, and you won't have wires everywhere. You can even rig up a dock if you're good with power and how it's distributed, but thats for another rainy day.Now. If you don't have a head unit with auxilary inputs. You have a few options still (though they're a bit trickier):Option #1: Go out, buy a new head unit. $150 will do at Best Buy for a pretty good basic CD player w/ auxilary.Option #2: Go all out hardcore and follow this method. It's a nice way of doing it but not all of us can solder and do the hard work.Option #3: If your car's head unit has a seperate CD player like this guy's Toyota Corolla, then you can basically workaround the CD player to allowed a different input. In this case, an iPod. Much easier than above but not as pretty in the end.Whichever choice you decide is yours. But by now, we should all start thinking about this considering how much we use our iPods and DAPs nowadays. Enjoy! Notice from jlhaslip: http://hackaday.com/2005/06/14/how-to-add-an-auxilary-jack-to-your-car/ third warning today and diabled for 3 days.
  2. i have 40 creedits what should i do to start my hosting?
  3. Notice from jlhaslip: Copied from one of these links?
  4. Notice from jlhaslip: /legacy
  5. The experimental usefulness of these functions is restricted to conditions where certain variables (T, and V or external P) are held constant, although they also have theoretical importance in deriving Maxwell relations. Work other than PdV may be added, e.g., for electrochemcial cells, or f ˑdx work in elastic materials and in muscle contraction. Other forms of work which must sometimes be considered are stress-strain, magnetic, as in adiabatic demagnetization used in the approach to absolute zero, and work due to electric polarization. These are described by tensors.In most cases of interest there are internal degrees of freedom and processes, such as chemical reactions and phase transitions, which create entropy. Even for homogeneous "bulk" materials, the free energy functions depend on the (often suppressed) composition, as do all proper thermodynamic potentials (extensive functions), including the internal energy.Name Definition Natural variablesHelmholtz free energy A=U-TS\, ~~~~~T,V,\{N_i\}\,Gibbs free energy G=U+PV-TS\, ~~~~~T,P,\{N_i\}\,Ni is the number of molecules (alternatively, moles) of type i in the system. If these quantities do not appear, it is impossible to describe compositional changes. The differentials for reversible processes are (assuming only PV work) dA = - PdV - SdT + \sum_i \mu_i dN_i\, dG = VdP - SdT + \sum_i \mu_i dN_i\,where μi is the chemical potential for the i-th component in the system. The second relation is especially useful at constant T and P, conditions which are easy to achieve experimentally, and which approximately characterize living creatures. (dG)_{T,P} = \sum_i \mu_i dN_i\,Any decrease in the Gibbs function of a system is the upper limit for any isothermal, isobaric work that can be captured in the surroundings, or it may simply be dissipated, appearing as T times a corresponding increase in the entropy of the system and/or its surrounding.
  6. In thermodynamics, the term thermodynamic free energy is a measure of the amount of mechanical (or other) work that can be extracted from a system, and is helpful in engineering applications. It is a subtraction of the entropy of a system ("useless energy") from the total energy, yielding a thermodynamic state function which represents the "useful energy".In short, free energy is that portion of any First-Law energy that is available for doing thermodynamic work; i.e., work mediated by thermal energy. Since free energy is subject to irreversible loss in the course of such work and First-Law energy is always conserved, it is evident that free energy is an expendable, Second-Law kind of energy that can make things happen within finite amounts of time.In solution chemistry and biochemistry, the Gibbs free energy change (denoted by ΔG) is commonly used merely as a surrogate for (−T times) the entropy produced by spontaneous chemical reactions in situations where there is no work done; or at least no "useful" work; i.e., other than PdV. As such, it serves as a particularization of the second law of thermodynamics, giving it the physical dimensions of energy, even though the inherent meaning in terms of entropy would be more to the point.The free energy functions are Legendre transforms of the internal energy. For processes involving a system at constant pressure P and temperature T, the Gibbs free energy is the most useful because, in addition to subsuming any entropy change due merely to heat flux, it does the same for the PdV work needed to "make space for additional molecules" produced by various processes. (Hence its utility to solution-phase chemists, including biochemists.) The Helmholtz free energy has a special theoretical importance since it is proportional to the logarithm of the partition function for the canonical ensemble in statistical mechanics. (Hence its utility to physicists; and to gas-phase chemists and engineers, who do not want to ignore PdV work.)The (historically earlier) Helmholtz free energy is defined as A = U − TS, where U is the internal energy, T is the absolute temperature, and S is the entropy. Its change is equal to the amount of reversible work done on, or obtainable from, a system at constant T. Thus its appellation "work content", and the designation A from arbeit, the German word for work. Since it makes no reference to any quantities involved in work (such as P and V), the Helmholtz function is completely general: its decrease is the maximum amount of work which can be done by a system, and it can increase at most by the amount of work done on a system.The Gibbs free energy G = H − TS, where H is the enthalpy. (H = U + PV, where P is the pressure and V is the volume.)There has been historical controversy: * Among physicists, ?free energy? most often refers to the Helmholtz free energy, denoted by F. * Among chemists, ?free energy? most often refers to the Gibbs free energy, also denoted by F.Since both fields use both functions, a compromise has been suggested, using A to denote the Helmholtz function, with G for the Gibbs function. While A is preferred by IUPAC, F is sometimes still in use, and the correct free energy function is often implicit in manuscripts and presentations.
  7. is anybody knows something about starcraft2. is it going to publish this year???if anybody knows something please write me down....
  8. serious???? you wont be sad. if anybody wants something i will be done easly....
  9. i read lots of books but i cant forget MARIO PUZO THE GODFATHER. this is very serious book that read.the second book is DAN BROWN's DAVINCI CODE. the third one is JACK LONDON WHITE TOOTH....
  10. this photo is real or something fake? im from pagana islands. if this is real everybody wants this but i think it is the terrible thing i have ever seen...
  11. microsoft and billy is the dangerous viruses on the world they are worse than aids.... but everybody uses them.
  12. gmail is faster, safer and cooler than hotmail and it is the best way to store some files on the net:d
  13. you should buy an ipod which is 80gb and buy a car sound system set and attach it to ipod its very cool
  14. 1-age of empires2-age of empires conquerors3-starctraft4-redalertbut i think starcraft is the best one i am wondering why they dont publish starcraft2
  15. i want to be in your starcraft team. i am good at with terrans. and i like battlecruser attacs....
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