° K can be replaced by ° C "Watt"

Very similar to electrical units and often confused. Any particular substance whose thermal conductivity is a measure of quantity (heat) The temperature difference between the two ends of the bit, unit time and unit length.

Table of thermal conductivity of common substances:

<table cellspacing=2 cellpadding=2 width=265 bgcolor=white> <tbody> <tr> <td width="25%">air</td> <td align=right>0<b>.</b>02</td> <td width="20%"><br> </td> <td width="24%">lead</td> <td align=right width="28">35</td> </tr> <tr> <td>aluminum</td> <td align=right> 240</td> <td><br></td> <td>mercury</td> <td align=right width="28">140</td> </tr> <tr> <td>asbestos</td> <td align=right>0<b>.</b>2</td> <td><br></td> <td>nylon</td> <td align=right width="28"> 0<b>.</b>3</td> </tr> <tr> <td>brass</td> <td align=right> 120</td> <td><br></td> <td>paraffin wax</td> <td align=right width="28"> 0<b>.</b>2</td> </tr> <tr> <td>brick</td> <td align=right>1</td> <td><br></td> <td>Platinum</td> <td align=right width="28">70</td> </tr> <tr> <td>Concrete</td> <td align=right>0<b>.</b>1</td> <td><br></td> <td>polyethylene</td> <td align=right width="28"> 0<b>.</b>3</td> </tr> <tr> <td>cork</td> <td align=right>0<b>.</b>05</td> <td><br></td> <td>polystyrene</td> <td align=right width="28"> 0<b>.</b>08</td> </tr> <tr> <td>Glass</td> <td align=right>1</td> <td><br></td> <td>rubber</td> <td align=right width="28"> 0<b>.</b>2</td> </tr> <tr> <td>gold</td> <td align=right> 300</td> <td><br></td> <td>silver</td> <td align=right width="28">420</td> </tr> <tr> <td>ice</td> <td align=right>2</td> <td><br></td> <td>copper</td> <td align=right width="28">401</td> </tr> <tr> <td>Iron, cast iron</td> <td align=right>60</td> <td><br></td> <td>water</td> <td align=right width="28"> 0<b>.</b>6</td> </tr> </tbody> </table>