can any one tell me how a liquor detection system works?
930607
Potassium dichromate is used to test for the prescence of alcohols,even in vapour form.Therefore,it will turn from orange to green in colour.This is the most basic form of alcohol detection;the heat required for the change is provided by your internal body temperature.Also,there are the more advanced alcohol detectors that measure HOW much alcohol are used;these work in almost the same way as litmus paper;the potassium dichromate or any other alkane-testing compound is soaked into the paper and dried.When the person breathes on it,the moisture from the breath moistens and activates the compound on the paper.Therefore,one can see how much of the potassium dichromate has been reacted.
296014
Check with you state's alcohol control folks. You can find out which department they are with by calling your state's Dept. of Revenue and/or Dept. of Licensing.
243347
There a many commercially availible coin counters out there, check your favorite search engine (or old school phonebook!).  \n\nIf all you want is the sensor I recomend contacting a vending machine supply/repair company for one.\n\nIf you want to make your own from scratch, just use a laser and a photo-detecter.  Have the laser hitting the photodectector and wire your electronics to count up the interuptions of the detector.
20655
The links on this site may help: http://en.wikipedia.org/wiki/Radar_detector
464770
The ones that get sent to laboratories do.  I work at an alcohol and drug rehabilitation center and the counselors randomly test the clients.  All of the urine containers have a temperature strip on them and a label to log the temp. and initials of the counselor collecting it.  That's to ensure the clients don't tamper with the containers and dilute the urine or pour in someone else's.  ;)
178785
Disregard the previous gibberish.\nTo estimate purity you need to be able to interpret the spectrum to determine which peaks belong to your product.  Assuming that you can do this, the entire spectrum needs to be integrated and from the integrals of the individual peaks you can determine the ratio of impurities present and thereby estimate the purity of your product.
37053
Daemon tools and Alchol 120% work great, same if you get Nero, as you can mount images with this too.
453404
The ways to test for alcohol level include:\nblood\nsaliva\nurine\nbreathalyzer\n\nHowever, most people are only familiar with the blood test and the breathalyzer.
382475
easy. u need to bias the LDR and have a ammeter to monitor the current. to  detect a wavelength u need to have a monochromator because the LDR will detect everything within its wavelength dependent range.
131692
A densitometer works by scaning a stained electrophoresis agar. A light is passed through the plate and picked by a detector.  The light path is interupted by the stain and that creates a "blip" on the detector. The thicker the stained area, the bigger the blip and vice versa.  The detector then processes the light and blips to give a read out that looks like a bumpy line on a graph.  It allows you to determine the quantity of protein,or whatever your phoresing, to be determined.
428650
Not much.  Why would they?  They don't even cover up the booze on your breath from people smelled by people, why would it affect the test?\n\nSeriously, I have a chemistry degree and I ask, why would it?
1117020
Use acrobat distiller.
50608
Built into each device is a microprocessor with a built-in miniature diferential hydrometer.  They detect the slightest presence of running water.\n\nThe only solution is to toss these devices.
498348
LIQUID-VAPOR EQUILIBRIUM IN BINARY SYSTEMS\nApparatus\nBoiling apparatus with heating mantle and variac (S), 1/100o thermometer (S),\nrefractometer (L), glass beads or boiling chips (S), weighing bottles (D), small\nstoppered vials (D), 250 ml n-hexane (S) and 250 ml absolute ethanol (S).\nOther binary systems which may be investigated are (1) cyclohexane (S)-\nethanol (S); (2) ethyl acetate (S)-ethanol (S); (3) Methanol (S)-ethyl acetate (S);\n(4) isopropanol (S)-n-hexane (S); (5) isopropanol (S)-cyclohexane (S); (6)\nisopropanol (S)-ethylacetate (S); (7) Acetone (S)-cyclohexane (S); (8) Acetone\n(S)- hexane (S); and (9) cyclohexane (S)-2-propanol (S), (10) 1 Propanol-water.\nCONSULT YOUR LAB INSTRUCTOR TO FIND OUT WHICH SYSTEM YOU\nARE TO INVESTIGATE.\nCAUTION: The ORGANIC LIQUIDS are TOXIC and FLAMMABLE! Use all\nnecessary precautions to avoid accidents!\nCAUTION: DISPOSE OF THESE ORGANIC LIQUIDS by placing in the\nWaste Containers provided. DO NOT POUR DOWN THE DRAIN!\n\nAssemble the apparatus with care; consult instructor if you are at\nall doubtful how to put the pieces together. A 3-way stopcock (shown in Figure\n2) is provided as a means of withdrawing samples of distillate and residue at the\nappropriate time. Best procedure is to withdraw distillate first, then the residue.\n\nProcedure\nClean the apparatus by rinsing with a few milliliters of pure n-hexane. Make sure\nvials are clean and DRY and have labels for marking. Add glass beads to flask\n(carefully).\nThere are three particularly important requirements in this experiment.\n• Make sure that the condensed distillate and the liquid residue samples are\ncollected under equilibrium conditions\n• Read the equilibrium temperature accurately\n• Analyze the compositions accurately\nPlace the thermometer in a position near the top and center of the three legs of\nthe first insert as seen in Figure 3. The hole in the second insert should be\nplaced pointed towards the condenser\nPlace 50 ml n-hexane in a flask. Adjust the variac (not more than 100 -110 volts)\nso that liquid boils "reversibly" (very moderate boiling with only very tiny bubbles\nformed) and so that distillate comes over at a rate which will fill the sample tube\nonce every two or three minutes.\nDraw off the first fraction (containing impurities) which comes over and discard\n(use waste container). When a constant boiling mixture is obtained, record the\nboiling point and withdraw samples from distillate and residue into marked vials.\nAdd 1 ml ethanol to the distillate in the flask, obtain equilibrium-boiling, record the\nboiling point, and again withdraw samples of distillate and residue for analysis.\nBoiling points and refractive indices of the distillate and residue are then\ndetermined after successive additions of 0.2, 0.5, 1, 2, 5 and 5 ml of ethanol. The\nrefractive indices are used to obtain the mole fractions of ethanol in these\nsolutions.\nClean the apparatus by rinsing with a few milliliters of ethanol, and repeat the\nprocess starting with 50 ml of ethanol in the flask. Now, however, boiling points\nare to be determined after successive additions of 0.5, 1, 2, 5, 15 and 20 ml of nhexane\nto the flask.\nIn order to construct a plot of refractive index versus mole percent ethanol, the\nrefractive indices are determined for the pure hexane and ethanol and for a\nseries of solutions containing accurately known weights of hexane and ethanol.\nMixtures about 5 ml in volume containing approximately 1 volume of ethanol to 1,\n3, and 6 volumes of hexane are convenient. To obtain a decent standardization\ncurve of refractive index versus mole fraction, a series of 6 to 8 solutions\ncontaining accurately known weights of n-hexane and ethanol must be prepared\nand their refractive indices measured. Only a few milliliters of each of these\nsolutions are required, so do not waste chemicals when preparing them. The\nrequired data for the vapor pressures of the organic liquids are availab
1130690
try netdetective.  that sight is reliable.
975165
It depends on the centre frequency and bandwidth of the IR detector.  Glass will absorb certain IR frequencies, very often IR detectors use this as they do not wish to see beyond windows which would cause false alarms.
987046
http://www.watertiger.net/RO/how_ro_works.htm\nyou find it here