อภิธานศัพท์ฟิสิกส์ (อวกาศ)
Completion requirements
อภิธานศัพท์ฟิสิกส์ (อวกาศ)
เลือกดูโดยใช้ดัชนีคำศัพท์
พิเศษ | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ก | ข | ค | ฆ | ง | จ | ฉ | ช | ซ | ฌ | ญ | ฎ | ฏ | ฐ | ฑ | ฒ | ณ | ด | ต | ถ | ท | ธ | น | บ | ป | ผ | ฝ | พ | ฟ | ภ | ม | ย | ร | ล | ว | ศ | ษ | ส | ห | ฬ | อ | ฮ | ทั้งหมด
M |
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M 3000 The optimum HIGH FREQUENCY radio wave with a 3000 km range, which
reflects only once from the IONOSPHERE (single hop transmission).
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MAGFLARE A geomagnetic and/or cosmic storm has been associated with this
flare.
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MAGNETIC BAY A relatively smooth excursion of the H (horizontal) component
(see GEOMAGNETIC ELEMENTS) of the geomagnetic field away from and
returning to quiet levels.
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MAGNETOGRAM Solar magnetograms are a graphic representation of solar mag-
netic field strengths and polarity.
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MAGNETOPAUSE The boundary layer between the SOLAR WIND and the MAGNETO-
SPHERE.
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MAJORFLARE This flare is the basis for the forecast of geomagstorm, cosmic
storm and/or protons in the earth's vicinity.
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MEDIUM FREQUENCY. (MF) That portion of the radio frequency spectrum from 0.3
to 3 MHz.
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MeV Mega (million) electronvolt. A unit of energy used to describe the
total energy carried by a particle or photon.
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MICROWAVE BURST A radiowave signal associated with optical and/or X-ray
FLAREs.
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MIDDLE LATITUDES With specific reference to zones of geomagnetic activity,
"middle latitudes" refers to 20 deg. to 50 deg. geomagnetic.
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MOUNT WILSON MAGNETIC CLASSIFICATIONS
Alpha. Denotes a unipolar SUNSPOT group.
Beta. A sunspot group having both positive and negative mag-
netic polarities, with a simple and distinct division between
the polarities.
Beta-Gamma. A sunspot group that is bipolar but in which no
continuous line can be drawn separating spots of opposite
polarities.
Delta. A complex magnetic configuration of a solar sunspot
group consisting of opposite polarity UMBRAe within the same
PENUMBRA.
Gamma. A complex ACTIVE REGION in which the positive and nega-
tive polarities are so irregularly distributed as to prevent
classification as a bipolar group.
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