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Everything posted by YT2095

  1. at those temps you`ll get all sort of side rxns taking place, as well as those provided by impurities. the temp gradients available in a test tube will make for all manner of "ideals" that will support/favor certain rxns.
  2. I rem watching a documentary about Pitchers, specifically the ones that live on the top of Rock Only mountains without ground based nutrients in Hawaii where it rains for hours daily washing away all forms of soil and potential foods. there are also "Air plants" that have no roots per se and get moisture from the air (you don`t have to water them).
  3. while I agree the OP is worded very badly, what I presented is the only Logical interpretation that rests within the bounds of Known Science to my awareness, I`m giving the benefit of the doubt of course.
  4. I think the OP is refering to No-Dig gardening, here: http://www.allotment.org.uk/articles/No_Dig_Method_of_Growing.php http://en.wikipedia.org/wiki/No-dig_gardening of which I`m an advocate also.
  5. it would be interesting to see the hormesis "j" curve of the data.
  6. if we look at chem, imagine the possible number of games playable in Chess, there are only 64 squares and 32 peices, we have well over 100 elements and near infinite "squares". so you can imagine how many orders of magnitude greater the possible chemical combinations can be! so really it remains how many of them are of any practical use? and that`s anyones guess really.
  7. all of which are used in radio applications and some of the old Music Synthesizers too although where a freq is too high and needs to be resolved to something lower, dividers or hetrodyne are commonly used, in radio the IF and mixer does that too. but sure, when you have either converted to a simple voltage, you can use that ramp up or down any output you like.
  8. my "Deal" is that Chemistry is a Science, and Exacting science at that, so "get some eggs" requires backing up with science, something you failed to do when asked. there is no room for half answers or speculations (or Opinion) here.
  9. so you don`t know? then why waste our time posting in the Chemistry (Science) area at all? if you have nothing useful to offer I`ll thank to keep out of these forums in future, and leave the replies to those that DO know some science.
  10. have a look at the LM2907 and 2917, as for VCOs I like to use the 4046, but there are 100`s of other methods from UJTs to chips or even thermionic valves.
  11. I sincerely doubt that 0.5g in a test tube went "boom"! AN has a critical diameter of at least 10cms even then, with the best of intentions DDT would be a low order detonation! you`de likely got impurities in there such as dust that was burning much like as you mentioned the jelly bean in chlorate, AN is a fairly good oxidiser when hot like that. it Must be mentioned however that heating AN to those sort of temps is just plain dumb and won`t yield a good result for N2O production, you`v simply wasted some good chemical.
  12. Frequency to voltage converters are quite cheap, and you should also look up VCO. you make take Voltage level as being your amplitude and convert it to what ever output accordingly.
  13. well, with the use of registers in that way you can do what`s called Polling, and if you don`t mind using a few extra clock cycles to do this, you can have Several banks of 64k if you like, the C= 128 did this. and the Zilog Z80 specifically incorporated this fuction in its architecture as well as boasting 16 bit internal registers (the 1`st 8 bit CPU to do this). oh yeah, and for the record the C= 64`s cpu was only BASED on the 6502, it wasn`t an actual 6502.
  14. if we ignore the control lines, you`ll see a ram chip has address and data lines, the Data lines in a 1 byte wide chip has 8 lines and can represent any number from 0 to 255. the address lines are like little storage boxes, and each box you can put in any number between 0 and 255 (data), a bit like the old pigeon holes or the way mail used to be sorted, one box for all the letters going to an address. to 2^64 is is simple too, take the number 2 and then double it, you get 4, double that you get 8, 16, 32, 64, 128 etc... in your chip, you have to keep doubling it 64 times, that`s a Massive number! think about it, a chess board has 64 squares, put a small piece of paper with any number between 0 and 255 writen on it, on square number 1, then 2 peices on sqr 2, 4 on sqr 3, 8 on 4, 16 on 5 etc... by the time you get to sqr 64, you`ll be an old man, have used up several pens, and have a pile of paper probably bigger than the empire state building!
  15. ^^^wot he said ^^^ it`s simply not true anymore, Now you have to use the Airbag bump to auto-unlock (too noisy don`t bother!).
  16. incidentally, the same thing can be done with a USB flash drive (I have a bootable XP Pro and all my IBM laptop drivers on one).
  17. simple answer is YES, it`s still perfectly usable, all you will have achieved by formatting it (at any level) is remove instructions for it to act upon.
  18. I don`t know enough about it to answer that, all I know is what qualifies them for the name and that I used to breed Gerbils.
  19. it May also help to remember that a Rodent simply means a mammal that`s teeth continue to grow (a bit like our fingernails do), the "dent" (dentia, dental etc...) in the name is a bit of a give-away so you Could have them evolve into all manner of creatures if you wanted to, even Giraffe like if there was a reason to reach higher for food.
  20. you may find this interesting (I did): http://en.wikipedia.org/wiki/Capybara
  21. Rabits and Beavers can get quite large, but there would need to be some driving force that made being bigger than that an advantage.
  22. Burcos use a bi-metal strip too, the temp control dial just adds or releases pressure on this to alter its sensitivity. in a MW, the only temp regs are to prevent overheating, usually disc or stud thermistors.
  23. you`ll not get a Really fast response anyway without using an analogue or Fuzzy-Logic method of regulation, there will be hysterisis due to the latent heat capacity of the water itself.
  24. most all domestic kettles use a bi-metal strip as the temp "sensor" switch trigger.
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