Why the Chromosphere has Its Discrete Fine Structure
نویسندگان
چکیده
منابع مشابه
Direct Imaging of Fine Structure in the Chromosphere of a Sunspot Umbra
High-resolution imaging observations from the Hinode spacecraft in the Ca II H line are employed to study the dynamics of the chromosphere above a sunspot. We find that umbral flashes and other brightenings produced by the oscillation are extremely rich in fine structure, even beyond the resolving limit of our observations (0.22”). The umbra is tremendously dynamic, to the point that our time c...
متن کاملGuessing Word Meaning from Context Has Its Limit: Why?
This study highlights the relationship between guessing strategy and the acquisition of passive and controlled active vocabulary knowledge among Malaysian university students. Two strategies make up the guessing strategy in this study namely using backward knowledge and using linguistic cues. Vocabulary Learning Questionnaire was used to measure the preference level of guessing strategy as one ...
متن کاملStructure of a photoionization layer in the solar chromosphere
We investigate the structure of a pure photoionization layer in the solar chromosphere on the basis of a one dimensional model in which an incident flux of EUV photons from above ionizes neutral hydrogen assumed to be flowing up with steady subsonic speeds from below. It is useful to analyze the structure equation in the phase plane of the hydrogen density (or velocity) and the ionizing photon ...
متن کاملWhat Is Temporal Fine Structure and Why Is It Important?
Complex sound like speech can be characterized as the sum of number of amplitude-modulated signals representing the outputs of an array of narrow frequency bands. Temporal information at the output of each band can be separated into temporal fine structure (TFS), the rapid oscillations close to the center frequency and temporal envelope (ENV), slower amplitude modulations superimposed on the TF...
متن کاملthe underlying structure of language proficiency and the proficiency level
هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1974
ISSN: 0074-1809
DOI: 10.1017/s007418090006890x