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2. Planetary rings
- Creator:
- Brahic, André and Sicardy, Bruno
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- space research, planetary rings, and resonances
- Language:
- Czech
- Description:
- Despite all the new data, the nature of planetary rings is stíII controversial. We don't know why each planetary ring is so different from the others and we have no idea of the nature of a single partícle ring, The large number of structures observed in planetary rings seems to indicate that many different physícal mechanisms are simultaneously at work. We are not yet able to include all of them in a single model. Resonances with nearby satellites play an ímportant role, but through complex mechanisms. Appropriate observations and more sophísticated models are needed to improve our understanding of rings and to identify the main physícal mechanisms involved.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
3. Postavení českých učitelek a jeho proměna po 28. říjnu 1918. "Jest to práce nejnevděčnější a nejbídněji placená."
- Creator:
- Bahenská, Marie
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Czech Lands, World War I, teacher's associations, and celibacy
- Language:
- Czech
- Description:
- The paper deals with the development of the education of women teachers in the Czech Lands, the position of women teachers during the lasts few years of the Austro-Hungarian Empire and the creation and importance of women's teachers associations. It depicts the transformation in the teaching profession brought about by the creation of the Czechoslovak Republic, basing itself primarily on an analysis of the Women Teachers Journal. and Článek zahrnuje poznámkový aparát pod čarou
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public