Astronomy, geophysics and the media
نویسندگان
چکیده
منابع مشابه
DICTIONARY OF GEOPHYSICS, ASTROPHYSICS, and ASTRONOMY
index notation A notation of ten-sors in terms of their component index structure(introduced by R. Penrose). For example, thetensor T (θ, θ) = T ba θ ⊗ θb is written in theabstract index notation as T ba , where the indicessignify the valence and should not be assigneda numerical value. When components need tobe referred to, these may be enclosed in matrix<lb...
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This survey is a summary of available information on radiation environments at radio frequencies (about 10 m to 1 cm wavelength); the Moon, the Planets, and space beyond the solar system are described. The topics presented are refraction and absorption of extraterrestrial radio waves by the Earth's atmosphere, radio and radar observations of the Mo^n and Planets, radio emission from the celesti...
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امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...
the differential effects of debate and media analysis as relate to enhancing efl learners critical thinking ability and writing performances
critical thinking ability has an important role in education. accordingly, scholars around the world are searching for new ways for teaching and improving students critical thinking ability. in line with the studies in efl contexts supporting the positive relationship between critical thinking and writing performances, this study investigated the differential effects of halverson’s critical thi...
15 صفحه اولReservoir geophysics
The concept of petroleum reservoir geophysics is relatively new. In the past, the role of geophysics was largely confined to exploration and, to a lesser degree, the development of discoveries. As cost-efficiency has taken over as a driving force in the economics of the oil and gas industry and as major assets near abandonment, geophysics has increasingly been recognized as a tool for improving...
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ژورنال
عنوان ژورنال: Astronomy & Geophysics
سال: 1997
ISSN: 1468-4004,1366-8781
DOI: 10.1093/astrog/38.4.31