วันศุกร์, 29 มีนาคม 2024, 11:57PM
เว็บไซต์: Moodle - Open-source learning platform | Moodle.org
รายวิชา: Moodle in Thailand (Moodle in Thailand)
อภิธานศัพท์: อภิธานศัพท์ฟิสิกส์ (อวกาศ)
I
INTERPLANETARY MAGNETIC FIELD (IMF) The magnetic field carried with the
SOLAR WIND.
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IONOSPHERE The region of the earth's upper atmosphere containing a small
percentage of free electrons and ions produced by photoioniza-
tion of the constituents of the atmosphere by solar ultraviolet
radiation at very short wavelengths (l.t.1000 angstroms). The
ionosphere significantly influences radiowave propagation of fre-
quencies less than about 30 MHz.
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IONOSPHERIC STORM A disturbance in the F REGION of the IONOSPHERE, which
occurs in connection with geomagnetic activity.
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