The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 71
... active Sun , to solar features that occur with increased frequency during the active phase of the solar cycle . It treats centres of activity , areas of localized strong magnetic fields at the Sun's surface ; the nature of sunspots and ...
... active Sun , to solar features that occur with increased frequency during the active phase of the solar cycle . It treats centres of activity , areas of localized strong magnetic fields at the Sun's surface ; the nature of sunspots and ...
Page 72
... active phase of the solar cycle : the active Sun a . Centres of activity : areas of localized strong magnetic fields at the Sun's surface b . Sunspots : their physical nature and the sunspot cycle of about 11 years c . Other features ...
... active phase of the solar cycle : the active Sun a . Centres of activity : areas of localized strong magnetic fields at the Sun's surface b . Sunspots : their physical nature and the sunspot cycle of about 11 years c . Other features ...
Page 488
... Active components i . Vacuum and gas - filled tubes ii . Semiconductor devices SONAR 17 : 1-4 17 : 1a - e 17 : 1f - 2e 17 : 2e - h 17 : 3a - 4c ELECTRONICS 6 : 678-686 10 : 688d - e / 12 : 57h - 58b / 18 : 365d - g / 18 : 577e - g / 18 ...
... Active components i . Vacuum and gas - filled tubes ii . Semiconductor devices SONAR 17 : 1-4 17 : 1a - e 17 : 1f - 2e 17 : 2e - h 17 : 3a - 4c ELECTRONICS 6 : 678-686 10 : 688d - e / 12 : 57h - 58b / 18 : 365d - g / 18 : 577e - g / 18 ...
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20th century administration Africa animals articles article sections articles referred arts Asia atomic basic behaviour biological Buddhism cells century characteristics chemical Christian civil classification communication concept cultural deals diseases distribution diverse Division II Division II headnote dynasty Earth economic effects elements Empire energy environment European evolution factors forms functions genetic goes groups growth headnote see page Hinduism Historical development Hominidae human hydrosphere Indian industry influence interactions Islām language literature logic Macropædia main subjects mathematics mechanisms methods military modern movements nature nuclear nuclear fission organization origin outline of subject outline treats passim period philosophy physical plants political problems processes production Propædia properties reactions reforms relation religion religious role sciences sections of Division sections other references social society Southwest Asia structure subject A begins Taoism techniques theory tion tissues types waves Western World War II