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1. The Direction Assigned to Electric Currents
... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...
[ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/Education/woppos.html -- 9.3 Кб -- 24.03.2006
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2. The Direction Assigned to Electric Currents
... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/mirrors/stern/Education/woppos.html -- 9.3 Кб -- 21.12.2007
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3. Обзоры препринтов astro-ph
Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...
[ Сохраненная копия ]  Ссылки http://xray.sai.msu.ru/~polar/sci_rev/current.html -- 14.8 Кб -- 02.04.2016
[ Сохраненная копия ]  Ссылки http://astro.uni-altai.ru/astro-ph/ -- 13.0 Кб -- 09.04.2016
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4. Current Long Range Planning HOTSPOTS
... But most importantly, please allow convective surface currents to carry your visits away from the redzones ! Link to Past calendar of hotspot areas. ... Thompson IR CDF 1st ep. ... 9822 . ... COSMOS 1st epoch . ... Thompson IR CDF 1st ep. ~ 30 hours. ... 9978 . ... UDF Epoch 1 . ... COSMOS 2nd epoch . ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/spst/lrpg/lrpg_hotspots_temp.html -- 17.7 Кб -- 01.05.2003
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5. Dark current and cooling
Next: Modes of Operation Up: CCD Scientific Performance Previous: Field of View . Thermal excitation of charge carriers from the valence to the conduction band creates a dark current signal which may vary with position in the array, and also has temporal shot noise variation. ... In a device devoid of localized defects which give rise to individual dark current spikes , most dark current arises from electrons generated at interface states at the surface. ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/user/socpub/ccd_review/node12.html -- 8.6 Кб -- 30.08.1996
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