Differences

This shows you the differences between two versions of the page.

--- electromagnetic_spectrum [2007-06-09 14:29] – external edit 127.0.0.1
+++ electromagnetic_spectrum [2007-07-17 13:36] (current) – nik
@@ Line 1: / Line 1: @@
 <html>
 <table border="0" cellpadding="4" width="600">
-<p />
 <tr bgcolor="FFFFCC">
 <th align="right">&nbsp;<br>
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 <th align="left">
 <font color="999999">Attenuation</font></th>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right">&nbsp;</td>
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 <td align="left"><font color="666666"> &nbsp; </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> <font color="666666">Long-wave radio</font> </td>
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 <td align="left" > <font color="666666"> Ionosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> <font color="666666">AM radio </font></td>
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 <td align="left"> <font color="666666"> Ionosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"> <font color="666666"> Short-wave radio  </font></td>
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 <td align="left"> <font color="666666"> Ionosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"> <font color="666666"> VHF radio (FM), TV  </font></td>
@@ Line 51: / Line 51: @@
 <td align="left"> <font color="666666"> Ionosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"> <font color="666666"> UHF radio, TV  </td>
@@ Line 59: / Line 59: @@
 <td align="left"> <font color="666666"> &nbsp; </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> <font color="666666"> Microwave radio  </font></td>
@@ Line 67: / Line 67: @@
 <td align="left" > <font color="666666"> &nbsp; </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> <font color="666666"> Microwave radio  </font></td>
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                    except some wavelengths </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> &nbsp; </td>
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 <td align="left" > <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right" rowspan="5" valign="middle">
 <br><br><br>
 <font color="666666">Infrared light<br><br><br>
-<p />
 <font size="2">3,000 - 10,000</font> &Aring; <br> Visible light
 <br><br><br>
@@ Line 95: / Line 95: @@
  </font>
 </td>
-<p />
 <td align="right" bgcolor="FFFF99"><b>3 THz</b><br> 3x10<sup>12</sup> Hz</td>
 <td align="left"  bgcolor="FFFF99"><b>100 &micro;</b><br> 100x10<sup>-6</sup> m</td>
@@ Line 102: / Line 102: @@
                    except some wavelengths </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"  bgcolor="FFFF99"><b>30 THz</b><br> 30x10<sup>12</sup> Hz</td>
@@ Line 110: / Line 110: @@
                    except some wavelengths </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"  bgcolor="FFFF99"><b>300 THz</b><br> 300x10<sup>12</sup> Hz</td>
@@ Line 119: / Line 119: @@
 RED = 564nm<br>
 BLUE = 420nm<br><br>
-<p>
 </font>
 </font>
-<p />
 </td>
 <td align="left"> <font color="666666">Atmosphere opaque<br>
                    except some wavelengths </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right" bgcolor="99FF99"><b>3 PHz</b><br> 3x10<sup>15</sup> Hz</td>
@@ Line 136: / Line 135: @@
 </td>
 <td align="left" valign="top"><font color="666666"> Visible light window </font> </td>
-<p />
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right" bgcolor="99FF99"><b>30 PHz</b><br> 30x10<sup>15</sup> Hz</td>
@@ Line 145: / Line 144: @@
 <td align="left"> <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> &nbsp; </td>
@@ Line 153: / Line 152: @@
 <td align="left" > <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"> &nbsp; </td>
@@ Line 161: / Line 160: @@
 <td align="left"> <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right" bgcolor="FFFFCC"> <font color="666666"> X-rays  </font></td>
@@ Line 169: / Line 168: @@
 <td align="left"  bgcolor="FFFFCC"> <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"> &nbsp; </td>
@@ Line 177: / Line 176: @@
 <td align="left"> <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> <font color="666666"> Gamma rays </font></td>
@@ Line 185: / Line 184: @@
 <td align="left" > <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> &nbsp; </td>
@@ Line 193: / Line 192: @@
 <td align="left" > <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="CCFFCC">
 <td align="right"> &nbsp; </td>
@@ Line 201: / Line 200: @@
 <td align="left" > <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"> &nbsp; </td>
@@ Line 209: / Line 208: @@
 <td align="left"> <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right"> &nbsp; </td>
@@ Line 217: / Line 216: @@
 <td align="left"> <font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
 <tr bgcolor="FFFFCC">
 <td align="right">&nbsp;</td>
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 <td align="left"><font color="666666"> Atmosphere opaque </font></td>
 </tr>
-<p />
-<p />
 <tr bgcolor="CCFFCC">
 <td colspan="5">
 <font size="2">
 <u>Excerpts from Glossary</u>:
-<p>
 &nbsp; &nbsp; &nbsp;
 THz=TeraHertz   &nbsp; &nbsp; &nbsp; &nbsp;
@@ Line 238: / Line 236: @@
 ZHz=ZettaHertz  &nbsp; &nbsp; &nbsp; &nbsp;
 YHz=YottaHertz  &nbsp; &nbsp; &nbsp; &nbsp;
-<p />
-<p>
-<p />
 &nbsp; &nbsp; &nbsp;
 &micro;=micrometer, micron  &nbsp; &nbsp; &nbsp; &nbsp;
@@ Line 247: / Line 244: @@
 fm-femtometer               &nbsp; &nbsp; &nbsp; &nbsp;
 am=attometer                &nbsp; &nbsp; &nbsp; &nbsp;
-<p />
-<p>
-<p />
 Angstrom,<font size="3"> &Aring;</font>, is 0.1 nm. Angsrtoms have traditionally been used to describe wavelengths of light. The nanometer is generally preferred today.
 </font>
 </td>
 </tr>
-<p />
 </table>
@@ Line 418: / Line 414: @@
 ==== spectrum allocation ====
-	¥	as relates to nasa > http://classwww.gsfc.nasa.gov/gsams/organization.htm
+  * as relates to nasa > http://classwww.gsfc.nasa.gov/gsams/organization.htm
-	¥	internaiton spectrum managment > http://www.itu.int/
+  * internaiton spectrum managment > http://www.itu.int/
+see also [[Natural Radio]] \ \  [[Van Eck]]
-see also [[Natural Radio]] \\  [[VanEck]]