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    61. The Magnetosphere
    ... One bundle, north of the equator, consists of field lines that head into the vicinity of the north magnetic pole, and the other bundle is its mirror image south of the equator, of field lines directed out of the southern polar cap. ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/earthmag/magspher.htm -- 14.2 Кб -- 22.12.2007
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    62. Stargazers and Skywatchers--lesson plan #1
    ... planet Venus does not have one) and that its magnetic poles are very near the poles on the axis around which the Earth turns ... In winter the Sun rises further in the south, and sets further south too. ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/ILskywatch.htm -- 14.2 Кб -- 22.12.2007
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    63. The Earth's Magnetosphere
    ... two regions of relatively smooth magnetic field, north and south of the plasma sheet ... smooth, and maintain roughly the same direction until they converge above the poles ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/Education/wms2.html -- 10.9 Кб -- 24.03.2006
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    64. The Earth's Magnetosphere-- History
    ... William Gilbert The north-south pointing property of the compass needle was discovered in China around the year 1000, and in ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/Education/whms1.html -- 7.6 Кб -- 24.03.2006
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    65. Trigonometry--what it is good for?
    ... Stick two poles in the ground at points A and B, and with a tape measure or surveyor ... Then remove the pole at A and replace it with a surveyor's telescope like the one ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Itrig1.htm -- 9.1 Кб -- 22.12.2007
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    66. Trigonometry--what it is good for?
    ... Stick two poles in the ground at points A and B, and with a tape measure or surveyor ... Then remove the pole at A and replace it with a surveyor's telescope like the one ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Strig1.htm -- 10.0 Кб -- 22.12.2007
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    67. Teaching about the Earth's Magnetism in Earth Sciences--Part 3
    ... and with those made in-between--shows that the north-south field of the Earth is weakening by about 5% per century , maybe even ... No one of course guarantees the trend will continue for 2000 years, until the poles are reversed. ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/earthmag/NSTA1C.htm -- 18.0 Кб -- 22.12.2007
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    68. Oertsted and Ampere
    ... Here is how this can lead to the notion of magnetic poles . ... coil acts very much like a magnet with magnetic poles at each end (an "electromagnet ... compass needle, also in the north-south direction (compare to the above image "What ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/earthmag/oersted.htm -- 12.8 Кб -- 22.12.2007
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    69. The Sundial
    ... 1a. Celest. Sphere . 1b. Pole Star . 2. The Ecliptic . 2a. The Sundial . ... in its path (at noon and to the south, in the northern hemisphere) and sets, the ... gnomon ") will indicate noon correctly when its shadow points north or south ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Sundial.htm -- 17.8 Кб -- 22.12.2007
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    70. Weather and Climate--Lesson Plan #36B
    ... Space Agency launches eastwards from Kourou, in French Guiana, on the north coast of South America, even closer to the equator ... from the equator, points get closer and closer to the axis, and the rotation speed drops--until at the poles, it is zero ...
    [ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Lsun1litB.htm -- 13.2 Кб -- 22.12.2007
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