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| -rw-r--r-- | supcon.tex | 12 |
1 files changed, 6 insertions, 6 deletions
@@ -153,14 +153,14 @@ 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. +%\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$77 K). +%\item Dunk the resistor in liquid nitrogen. Wait until it stops boiling. Record the resistance at this low temperature ($\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} +%\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} |