วันศุกร์, 26 เมษายน 2024, 5:19PM
เว็บไซต์: Moodle - Open-source learning platform | Moodle.org
รายวิชา: Moodle in Thailand (Moodle in Thailand)
อภิธานศัพท์: อภิธานศัพท์ฟิสิกส์ (อวกาศ)
A
ASTRONOMICAL UNIT (AU) The mean earth-sun distance, equal to 1.496E+13cm
or 214.94 solar radii.
|
AURORA A faint visual phenomenon associated with geomagnetic activity,
which occurs mainly in the high-latitude night sky; typical
auroras are 100 to 250 km above the ground.
|
AURORAL OVAL An oval band around each geomagnetic pole which is the locus
of structured AURORAe.
|
AUTUMNAL EQUINOX The equinox that occurs in September.
|