Just like all features of a probabilistic distribution, $\rho$ may be fully (increasingly accurately) reconstructed from the frequency counts resulting from such infinitely many measurements. This general strategy is referred to as the quantum state tomography.
One may measure all of $\rho$ by doing infinitely many measurements on the repetitions of the same situation, however. This rule, that only linear operators are physically meaningful and "measurable", is a totally important and universal axiom of all of quantum physics and is often ignored, like most other facts about quantum mechanics, but it's still totally right and crucial. The density matrix isn't a fixed linear operator, however, so it can't be measured. Possible results of measurements are the eigenvalues and the probabilities of different outcomes are calculable by the usual formulae. But without knowing a good candidate form of the density matrix, one can't measure its properties in isolation.Īccording to basic postulates of QM, everything that can be measured may be interpreted as an observable and each observable has to be represented by a well-defined particular linear Hermitian operator acting on the Hilbert space. At most, one can make measurements and see that they statistically agree or statistically disagree with a given particular form of the density matrix. The wave function – and similarly the density matrix (which is the tensor square of the wave function or a linear combination of such squares) – isn't an observable so it isn't observable (without "a"), either. The same comments apply to the wave function $\psi$. And the knowledge is intrinsically subjective, not objective, so it can't be measured. It describes the observer's knowledge of the properties of the physical system. No drug (whether legal or illegal) is completely safe, we recommend avoiding all recreational drug use.There is no way to measure $\rho$ or any function of its matrix elements such as $\gamma$ by a single measurement (in one repetition of the situation) because $\rho$ is a quantum counterpart of the probability distribution. Note: Scale and ampoule rack are not included, but you can get them separately. To test for dangerous substances that may have been added to your cocaine, use the Cocaine Cuts Test Kit. This test does not tell you anything about the adulterants that were used to cut the sample. Use the pictures to compare with results from future tests. Take pictures of the test results under the same lighting and with the same camera. Test samples from different sources at the same time, so that you can more easily compare results.
State purity test portable#
You can buy a good portable digital scale from here: However, for best results, use a scale to weigh the exact amount of powder. You can use the materials that come with the kit to help you get the right amount. If you use too much, the results will be skewed! When comparing different samples, test using the same quantity from each. Please use only 20 mg (a small amount) of your sample. The test will also not react to other substances from the family of cocaine such as lidocaine, benzocaine, procaine, etc. This cocaine purity test is very insensitive to the usual substitutes such as mannitol, which won’t skew the purity reading. No brown color at all means little to no cocaine: less than 10%. It does not reach one star purity (it was a 10% pure sample). The last ampoule has almost no cocaine in it.The fourth ampoule was a 50% pure sample (very common to find on the streets) and tests between 2 and 3 stars.The third ampoule was a 60% pure sample and gets 3 to 4 stars.The second ampoule was a 70% pure sample and gets 4 stars.The first ampoule (where the bottom layer is almost like coffee) was a 90% pure sample and is worth 5 stars.The results from the tests done above can be read as follows:
Cocaine Purity Test Color Chart Image of the Difference in Purity of Cocaine Samples Simply compare the test result with the color chart included with the kit to get a good idea about how pure your cocaine sample is. It requires a small sample (you only need 20 mg of cocaine). Use the Cocaine Purity Test Kit to get a good idea about the purity of your cocaine.
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