Vertex deviation in the galactic plane is not compatible with the
Oort-Lindbalad theory about galactic rotation (stationary system with cylindrical symmetry). However, like we show in this work, it can be obtained in a stellar system model that verifies the Chandrasekhar postulates in a non-stationary state, axial symmetry, non-cylindrical, and with an equatorial plane of symmetry.
The wedding, or its socio-cultural equivalent, was considered to be the most important social event in all human societies of all time. In traditional European society, everything that related to the creation of a permanent union between a man and a woman in the institution of marriage was endowed with a sacred character and was subject to public scrutiny. The study aims to provide a commented description and to interpret the wedding merriment recorded in the first half of 1990 in Šumice, one of the Czech villages in the Romanian Banat. The first part explains the issue of the ethnic enclave as a subject of ethnological study. It defines the peculiarities of Šumice in the context of the Czech Banat, and it gives an overview of the demographic development of the village. The wedding ritual (veselka) in Šumice is presented from an ethnographic-historical perspective first. The first part of the study was published in the previous, first, issue of Ethnographic Journal 2022.
The wedding, or its socio-cultural equivalent, was considered to be the most important social event in all human societies of all time. In traditional European society, everything that related to the creation of a permanent union between a man and a woman in the institution of marriage was endowed with a sacred character and was subject to public scrutiny. The study aims to provide a commented description and to interpret the wedding merriment recorded in the first half of 1990 in Šumice, one of the Czech villages in the Romanian Banat. The first part explains the issue of the ethnic enclave as a subject of ethnological study. It defines the peculiarities of Šumice in the context of the Czech Banat, and it gives an overview of the demographic development of the village. The wedding ritual (veselka) in Šumice is presented from an ethnographic-historical perspective first. The second part of the study will be published in the next, second, issue of the Ethnographic Journal 2022.
Černé díry jsou fascinující objekty. Nemusíme ale do nich rovnou padat, abychom se o nich něco dozvěděli... Proč se je podařilo objevit
až s rozvojem rentgenové astronomie? Jak funguje kosmická laboratoř?
Ve dvacátém století se astronomové dostali téměř až na samou hranici viditelného vesmíru. Ve velkých vzdálenostech na škálách stamilionů a miliard světelných roků dnes pozorujeme struktury, které vyplňují dosud nezmapovaný prostor a zároveň se pohybují a mění v čase. Pohyby a struktury velkých měřítek jsou tím nejrozsáhlejším kartografickým a astrofyzikálním projektem, ke kterému dosud astronomové dospěli., Ivan Havlíček., and Obsahuje bibliografii