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Polyarnoe siyanie vdaleke
<< Vchera 18.11.2007 Zavtra >>
Polyarnoe siyanie vdaleke
Avtory i prava: Lens MasVei
Perevod: Kolpakova A.V.
Poyasnenie: Nekotorye polyarnye siyaniya mozhno uvidet' tol'ko s pomosh'yu fotoapparata. Eto nevidimye polyarnye siyaniya, slishkom slabye, chtoby ih mozhno bylo uvidet' nevooruzhennym glazom. Vse potomu, chto chelovecheskii glaz sobiraet kvanty sveta za doli sekundy, a fotoapparat mozhet ih sobirat' prakticheski bezgranichnoe vremya. Poka fotograf snimal zhivopisnyi peizazh nad okrugom Dzhunou v amerikanskom shtate Alyaska, u nego takzhe poluchilos' zapechatlet' i zelenye nevidimye polyarnye siyaniya nad gorizontom. Kak izvestno, poyavlenie polyarnyh siyanii vyzvano stolknoveniem energichnyh chastic, letyashih ot Solnca, s magnitnym okruzheniem Zemli. Energichnye chasticy, takie kak elektrony i protony, slivayutsya vblizi polyusov Zemli i stalkivayutsya s atmosferoi. Molekuly vozduha, s kotorymi proishodit stolknovenie, teryayut elektrony, a zatem, kogda molekuly kisloroda zahvatyvayut obratno elektrony, ispuskaetsya zelenyi svet. Voobshe zhe polyarnye siyaniya mogut prinimat' raznoobraznye formy i cveta.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

English text
Po materialam Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: aurora - polyarnoe siyanie - Magnitnoe pole Zemli
Publikacii so slovami: aurora - polyarnoe siyanie - Magnitnoe pole Zemli
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