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author | Eugeniy E. Mikhailov <evgmik@gmail.com> | 2019-08-28 16:37:37 -0400 |
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committer | Eugeniy E. Mikhailov <evgmik@gmail.com> | 2019-08-28 16:46:25 -0400 |
commit | b606cc565f91c5ba2176893957a1cd7e86d728bc (patch) | |
tree | ea134c9b2688af604a2ff1f1e8fbee24c9f73879 /supcon.tex | |
parent | c418b2f332f924aaed5ca20e0553593a0db565ea (diff) | |
download | manual_for_Experimental_Atomic_Physics-b606cc565f91c5ba2176893957a1cd7e86d728bc.tar.gz manual_for_Experimental_Atomic_Physics-b606cc565f91c5ba2176893957a1cd7e86d728bc.zip |
Synchronized manual with one of Justin
Updated source was located at
located at https://bitbucket.org/jrsteven/phys251_manual/src/master/
Diffstat (limited to 'supcon.tex')
-rw-r--r-- | supcon.tex | 38 |
1 files changed, 21 insertions, 17 deletions
@@ -154,28 +154,32 @@ near the critical temperature (6.4-4.5 mV). Make a plot of \end{enumerate} -%\section*{Resistance of a ceramic resistor} -%\begin{enumerate} -%\item Attach a ceramic resistor to a multimeter reading resistance ($k\Omega$ range). Record the room temperature resistance. -%\item Dunk the resistor in liquid nitrogen. Wait until it stops boiling. Record the resistance at this low temperature ($\approx$77 K). - -%\item Take the resistor out of the nitrogen and carefully set it down. Record the resistance as the temperature increases. Make a plot of the measured resustance vs temperature. Compare the plots for the superconductor and the normal resistor, and explain the differences. -%\end{enumerate} \hskip-.8in\includegraphics[height=5in]{./pdf_figs/mvtok} +\newpage + +\subsection*{Instructions for a brief writeup} + +The abstract, introduction and conclusion are not needed. Do the following analysis steps and/or answer the following questions. Make it clear which question you are addressing. For example: + +\noindent{\bf Thermocouple}\\ +Blah, blah, blah, blah... + +\subsubsection*{Address the following points} + +\begin{description} +\item[Diagram] the experimental setup, including the current source, the superconductor and its wires, and the DMMs. +\item[Thermocouple] Explain in your own words what a thermocouple is and how it works (i.e., the physics). No more than a paragraph is needed. +\item[Resistance] In the Meissner effect demonstration, when moving the magnets around, did you feel resistance? Why or why not? Explain in terms of physics concepts and principles that you learned in PHYS 102. +\item[Tabulate] your data, including columns for voltage, current, resistance, thermocouple voltage, and temperature. +\item[Uncertainties] Estimate them and state them. +\item[Temperature] Explain how you got the temperature from the thermocouple voltage. What was your procedure? No more than a couple of sentences are needed. +\item[Plot] the resistance (y-axis) vs temperature (x-axis). Based on the plot, what is the critical temperature for YBCO? +\item[Fit] the R vs T plot. What function? You tell me. Based on the fitted function, can you estimate the critical temperature? Parameterizing a dataset and then using it to characterize the data, perhaps with a single number, is a common laboratory task. Get used to it! +\end{description} -%\begin{tabular}{|p{17mm}|p{17mm}|p{17mm}|p{35mm}|p{35mm}|}\hline -% V (mV)& I (mA)& R ($\Omega$)& Thermocouple (mV)& Temperature (K)\\ -%&&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline -%&&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline -%&&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline -%&&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline -%&&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline -%&&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline -%&&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline &&&&\\\hline -%\end{tabular} \end{document} |