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F1layer |
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F1layer [¦ef ′wən ‚lā·ər] (geophysics) The ionosphere layer beneath the F2layer during the day, at a virtual height of 120-180 miles (200-300 kilometers), being closest to earth around noon; characterized by a distinct maximum of free-electron density, except at high latitudes during winter, when the layer is not detectable. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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