We introduce a new method of solution of the light curves of eclipsing binaries based on the Wilson and Devinney ((1971) Roche model. We performed an interesting application of the procedure to the binary system TT Her.
A systematic study of the ultraviolet spectra of the Algol-like semidetached binary stars is described. Revision of the traditionally accepted spectral types has been found necessary in most cases toward earlier spectral types. Superionized emission lines seen at total eclipses show interesting differences in intensities.
Observations of stellar spectra in the UV-region during twenty years are briefly reviewed. Basic achievements have been made in the investigation of interstellar absorption, effective temperatures scale, mass loss, stellar chromospheres and non-stationary stars.
One of the most famous Czech scientists, theoretical astronomer Prof. Jan Palouš, a member of the Academy Council or the ASCR, talks in an interview about his membership in the prestigious correspondence-board of The Royal Society of Edinburgh. and Marina Hužvárová.