Recent content by Kvm90

Wow, thanks a lot for the information. Your explanation of 'frequentist statistics' is really helpful. I've been independently trying to understand the uses of each statistical test, but your explanation of the null hypothesis as it relates to my study really made me understand what I am really...

Thanks Stephen, I am trying to obtain an answer that can be published in an article. As for explaining the rating system - the participants are given a questionnaire in which they have the multiple choice options shown above (never, 1-6 times per year, 7-11 times per year, etc...). The...

In my opinion, there's a shortage of jobs period. As a physics major, you're schooling and is impressive but the scope of jobs to which you can apply is relatively limited. In a small market, limiting your eligible job opportunities obviously just makes getting a job more difficult. That having...

Help would be greatly appreciated! Please post if you can!

I have a data set consisting of ~10,000 patients. Each patient answered how often they had chocolate and we assigned the following values to their responses: Never= 0* 1-6 time per year = 0.01* 7-11 times per year = 0.028* 1 time per month = 0.033* 2-3 times per month = 0.08*...

The preferred deltaT for the device is dependent on what temperature you keep the hot plate. For example, long story short I used the heat of fusion of paraffin wax, which has a melting temperature of 40C, as a phase changing material for my heat sink. Wanting to achieve a cold plate temperature...

(my post got cut off weird) that's supposed to say a cold plate temp of -10C

Hey angeline, as I'm sure you've found by now, peltiers can easily achieve those temperatures with the right heat sink. Browse TE Technologies if you're looking for different specs. The spec charts are pretty difficult to apply but I've been maintaining a cold plate temp of -10C for 30 minutes...

Hey, I am making a cooling system using a peltier junction with a cold finger on one side and a heat sink on the other. For my heat sink, I am depositing the heat into the phase change of a bismuth alloy (about 70 deg C). When the current across the peltier is increased and the hot side...

Hey all, I'm using a peltier device for a cooling system I'm working on. The metal leads connecting the peltier to a power source keep falling off. I am looking to coat them with epoxy that must be a thermal insulator. It also MUST be an electrical insulator. The problem I've had is that...

Thank you very much. I will be sure to use care when handling the heat sink.

Hey all, I am trying to construct a peltier device where the 'cold side' can cool down to about 10 degrees C. I want to be able to run the device for upwards of 30 minutes but I am not sure what heat sink to use to remove the heat from the hot side. Any suggestions on what heat sink to...

Hey all, I'm working in a lab and am trying to build a heat sink. Basically, I need to find the heat of fusion of a certain metal alloy (which contains multiple elements). The alloy consists of 50% Bismuth 26.7 Lead 13.3 Tin and 10% Cadmium. How do I find the heat of fusion? Is it the...

Can anyone explain CP violation in as simplistic a fashion as possible? I just can't understand really in depth versions I am finding online.

If anyone can help tonight that would be great; is my question unclear? I really want to fill this gap in my understanding of the basics of E&M