Electromagnetic waves added

electromagnetic-waves.html

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@@ -186,25 +190,25 @@ <h2 id="introduction">Introduction:</h2>
                     </tr>
                     <tr>
                       <td>Long-wave radio</td>
-                      <td>&gt;10 m</td>
+                      <td>&gt;10 m (\(10^7 \mu\)m)</td> 
                       <td>&lt;3x10<sup>7</sup> Hz</td>
                       <td>Includes traditional AM radio region. These frequencies can travel long distances by multiple reflections between the surface of the earth and its ionosphere.</td>
                     </tr>
                     <tr>
                       <td>Short-wave radio</td>
-                      <td>10 cm - 10 m</td>
+                      <td>10 cm - 10 m (\(10^6 -10^7\mu\)m)</td>
                       <td>3x10<sup>7</sup> - 3x10<sup>9</sup></td>
                       <td>Used for TV, FM, and other communication purposes. Generally travels only relatively short distances because the ionosphere is transparent to it.</td>
                     </tr>
                     <tr>
                       <td>Microwave</td>
-                      <td>1 mm - 10 cm</td>
+                      <td>1 mm - 10 cm (\(10^3 -10^6\mu\)m)</td>
                       <td>3x10<sup>9</sup> - 3x10<sup>11</sup></td>
                       <td>Present limit of radio technology for most purposes.</td>
                     </tr>
                     <tr>
                       <td>Far infrared</td>
-                      <td>30 μm - 1 mm</td>
+                      <td>30 μm - 1 mm (\(30 -10^3 \mu\)m)</td>
                       <td>3x10<sup>11</sup> - 10<sup>13</sup></td>
                       <td>3 K radiation fills universe.</td>
                     </tr>
@@ -216,25 +220,25 @@ <h2 id="introduction">Introduction:</h2>
                     </tr>
                     <tr>
                       <td>Near infrared</td>
-                      <td>700 nm - 3 μm</td>
+                      <td>700 nm - 3 μm (0.7 μm - 3 μm)</td>
                       <td>10<sup>14</sup> - 4x10<sup>14</sup></td>
                       <td>Solar and stellar emission.</td>
                     </tr>
                     <tr>
                       <td>Visible</td>
-                      <td>400 nm - 700 nm (1.7 - 3 eV)</td>
+                      <td>400 nm - 700 nm  (0.4 μm - 0.7 μm) (1.7 - 3 eV)</td>
                       <td>4x10<sup>14</sup> - 7x10<sup>14</sup></td>
                       <td>Peak of solar radiation. Visible to human eye, standard photographic film and CCD video detectors.</td>
                     </tr>
                     <tr>
                       <td>Ultraviolet</td>
-                      <td>200 nm - 400 nm (3 - 6 eV)</td>
+                      <td>200 nm - 400 nm (0.2 μm - 0.4 μm) (3 - 6 eV)</td>
                       <td>7x10<sup>14</sup> - 1.5x10<sup>15</sup></td>
                       <td>Divided at 300 nm by atmospheric (ozone) cutoff. Appreciable solar flux causes sunburn.</td>
                     </tr>
                     <tr>
                       <td>Vacuum UV (EUV)</td>
-                      <td>10 nm - 200 nm (6 - 120 eV)</td>
+                      <td>10 nm - 200 nm (0.01 μm - 0.2 μm) (6 - 120 eV)</td>
                       <td>1.5x10<sup>15</sup> - 3x10<sup>16</sup></td>
                       <td>Very strong absorption in matter, hence very difficult to observe.</td>
                     </tr>