Literatura i astronomiya| <<Predydushaya | Soderzhanie | Sleduyushaya>> |
I SNOVA VIKTOR STEPANOV
O kosmicheskih skorostyah: pervoi, nuzhnoi dlya togo, chtoby preodolet' prityazhenie Zemli i stat' ee sputnikom; vtoroi, chtoby otorvat'sya ot Zemli i stat' sputnikom Solnca; i tret'ei, chtoby preodolet' prityazhenie Solnca i uiti v bezbrezhnye prostory Vselennoi - uchenye znali eshe v XIX veke. No V. Stepanov v XX veke, v epohu kosmicheskoi ery, stal o nih zabyvat'. V novelle "Zelenaya lampa" (sm. vyshenazvannoe izdanie ego povesti v novellah, str. 72-73) on utverzhdaet: "Dlya togo chtoby aeroplan oborachivalsya vokrug zemnogo shara, kak Luna, trebuetsya dostizhenie nachal'noi skorosti vosem' kilometrov v sekundu. Chtoby naveki udalit'sya ot zemnogo shara - odinnadcat' s lishnim kilometrov, a chtoby dostignut' planety Mars - chetyrnadcat'". No, chtoby doletet' do planety Mars, ne obyazatel'no nado razgonyat' nachal'nuyu skorost' korablya do chetyrnadcati kilometrov v sekundu - dostatochno i vtoroi kosmicheskoi skorosti. Prichem polet k Marsu s nachal'noi vtoroi kosmicheskoi skorost'yu "odinnadcat' s lishnim kilometrov" budet naibolee ekonomichnym v smysle rashodovaniya topliva, hotya i neskol'ko bolee prodolzhitel'nym, chem polet s nachal'noi skorost'yu chetyrnadcat' kilometrov v sekundu.
Obidno, chto svoi oshibochnye rassuzhdeniya V. Stepanov vydaet za rassuzhdeniya vydayushegosya teoretika i praktika v oblasti kosmonavtiki Fridriha Arturovicha Candera.
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Publikacii s klyuchevymi slovami:
metodika prepodavaniya - prepodavanie astronomii - shkol'nyi kurs astronomii - testirovanie - zadacha - hudozhestvennaya literatura - kontrol'nye raboty
Publikacii so slovami: metodika prepodavaniya - prepodavanie astronomii - shkol'nyi kurs astronomii - testirovanie - zadacha - hudozhestvennaya literatura - kontrol'nye raboty | |
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