# Search results

1. ### Magnetic field of an infinite current sheet : Amperes law

I was asked to find the magnetic field of an infinite current sheet due to amperes law. Is my attempt to the solution correct ? The final answer is correct, but l am doubtful of how l got there.
2. ### Integration techniques

I am a bit rusty on my integration techniques. Can someone please tell me which integration technique to use for this integral ? I don't want to anyone to solve it for me. I just want to be nudged in the right direction.
3. ### What distribution is this

So l generated a 100 000 data sets in Matlab each consisting of 80 random poisson distributed numbers. I then calculated the p-values for each data set and stored them into a vector which l used to make this histogram. I was wondering, what distribution is shown by this histogram
4. ### How much variance in my p-value

So l have a nuclear counting system which follows a poisson distribution. I have taken 5 data sets consisting of 30 counts each and l have used them in a chi squared gof test to see if they follow a poisson distribution. For each data set my p-value has been changing. Initially it was 0.5 then...
5. ### Will 2.8 micro curie of radiation cause cancer

I have been working with a 2.8 (decayed over summer) micro curie cobalt-57 source testing a gamma camera. I would like to know if this made my risk for getting cancer higher ? My employers say l don't need to be worried.
6. ### Using a combination of a specular and diffuse reflector

So l am designing a radiation detector using solid state silicon photo multipliers. On their website they tell me that the SiPM must be coupled to a Cs(Ti) crystal with a combination of specular reflector diffuse reflector film between the scintillator and detector. How does a combination of a...
7. ### Comparing Absolute Deviation to Mean Absolute Deviation

I am doing nuclear counting for medical imaging and l do not know the 'true' estimate of counts for my system. So to see if my system is operating consistently as l change a certain part, l am going to measure its precision. That is, as l change that part, are my number of counts within the same...
8. ### Comparing Absolute Deviation to Mean Absolute Deviation

I calculated 15 absolute deviations and their mean absolute deviation. Would it be valid for me to say my data set is accurate if all the 15 absolute deviations are within ±5% of the mean absolute deviation ?
9. ### Comparing Absolute Deviation to Mean Absolute Deviation

Hi Guys, I am trying to measure variability in a part for my sensor which l do not know the true value. So l decided that a good way to measure variability in this case would be to measure precision of my data points as l change this part on the sensor. So l was wondering, can l compare the...
10. ### Kolmogorov-Smirnov and P-value

I am changing around parts on the sensor and l want to know if the performance stays the same as l change the parts. In other words, l take measurements on a sensor and then change let us say a transistor, and then take measurements again. I want to compare the data from before l removed the...
11. ### Kolmogorov-Smirnov and P-value

Yes, it is the same. The data is generated from a radioactive source which is constant. The parameter of the distribution is one.
12. ### Kolmogorov-Smirnov and P-value

I am measuring the # of counts in a sensor that is being hit by a light source which follows the Poisson distribution in the variations
13. ### Kolmogorov-Smirnov and P-value

So what is the best way to answer my question as to are the two data sets equal.
14. ### Kolmogorov-Smirnov and P-value

I just want to know if the data sets are equal, l know they have the same distribution, but l want to know if the difference in the two data sets are statistically significant or they are a cause of concern. Thanks for your insight.
15. ### Kolmogorov-Smirnov and P-value

So l am testing a sensor l recently developed. I am changing parts on the sensor and testing to see if my data is reproducible with different parts. I compare the data using the KS test. However, the data always have the same distribution or trend line. To test if the two data sets are the same...
16. ### Testing to see if my data is uniform

So l have got 16 data points and l would like to know if this data follows a uniform distribution. I have tried using the punif function in R, but l am not sure about the results l am getting. Can someone please tell me what is the best way and hopefully easiest way to see if data is uniformly...
17. ### I want to maximize one factor whilst minimizing the other

I have two sets of data, one represents electrical noise in a circuit and the other represents the gain in the circuit. So l varied the voltage in the circuit and calculated both the gain and the electrical noise at those voltages. Now l want to know what kind of analysis can l do to make sure...
18. ### Can l use chi-square test in this scenario ?

I was just reading about a single factor ANOVA test. I think l will go for that one.
19. ### Can l use chi-square test in this scenario ?

They are 7 parts each with 5 measurements. I want to compare 7 sets of data at the end of the day, and see if they are the same. Doesn't the t-test work in a situation you have a Gaussian distribution ?
20. ### Can l use chi-square test in this scenario ?

This is exactly what l am looking for. After testing a part and replacing it with another l want to know if the mean distributions of the 7 parts are equal. In other words this tells me that changing the part on my camera doesn't affect its performance. Hopefully that is the conclusion l want to...
21. ### How is percentage uncertainty different from standard deviation

So l guess the variance is good enough. After adding up the variances l just end up calculating the standard deviation and l will use that as the error in my equipment.
22. ### How is percentage uncertainty different from standard deviation

How is percentage uncertainty different from standard deviation ? I have five measurements and l calculated the average, standard deviation and variance. Do l need to calculate the percentage uncertainty ? Does percentage uncertainty give me any more information which the other values l...
23. ### Can l use chi-square test in this scenario ?

I will be measuring counts per pixel. So l want to know if the variance is due to random in nature, or it is due to something wrong with the part l am changing.
24. ### Can l use chi-square test in this scenario ?

I am testing a certain part on a camera. So l was thinking of taking a set of measurements and then change that part and take another set of measurements.After having those two sets of data l wanted to do a chi-square test in order to see if variations in how the two parts perform is due to...
25. ### What is energy resolution

It is related to gamma ray imaging.
26. ### What is energy resolution

So generally speaking, the lower the %FWHM the better the camera is ?
27. ### What is energy resolution

Well, l am reading a thesis on them and the author keeps on referring to energy resolution as a % FWHM. So l really don't understand what this means.
28. ### What is energy resolution

Can someone explain the concept of energy resolution to me, especially in gamma cameras. Thanks.
29. ### Engineering Behavior of sequential circuits

Does it count from 0-7 then ?
30. ### Engineering Behavior of sequential circuits

Is there a systematic way in which l can determine the behavior of this sequential circuit ? The textbook gives me its counting sequence but l don`t understand how they came to it