วันศุกร์, 26 เมษายน 2024, 1:24AM
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อภิธานศัพท์: อภิธานศัพท์ฟิสิกส์ (อวกาศ)
E
E REGION A daytime layer of the earth's ionosphere roughly between the
altitudes of 85 and 140 km.
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EMERGING FLUX REGION (EFR) An area on the sun where new magnetic flux is
erupting.
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ERUPTIVE Solar activity levels with at least one radio event(10cm) and
several chromospheric events per day (Class C Flares)
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ERUPTIVE PROMINENCE ON LIMB (EPL) A solar PROMINENCE that becomes activa-
ted and is seen to ascend from the sun.
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EXTREME ULTRAVIOLET (EUV) A portion of the electromagnetic spectrum from
approximately 100 to 1000 angstroms.
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EXTREMELY LOW FREQUENCY (ELF) That portion of the radio frequency spectrum
from 30 to 3000 hertz.
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