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The use of computers and multimedia, as well as the World Wide Web and new communication technologies, allows new forms of teaching and learning like distance learning, blended learning, use of virtual libraries and many more. The herewith discussed RCL project shall offer an additional contribution. The basic idea is for a user to connect via the Internet with a computer from place A, to a real experiment carried out in place B. An overview of our technical and didactical developments as well as an outlook on future plans are presented. Currently, about 10 RCLs have been implemented. The essential characteristics of an RCL are the intuitive use and interactivity (operating the technical parameters), the possibility of different points of view of the ongoing experiment thanks to web cams, and the quickest possible transfer of the data measured by the user. A reasonable use of sensibly chosen real experiments as remote labs allows a new form of homework and exercises, as well as project work and the execution of experiments, which usually would a teacher's prerogative only.

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We have measured frequencies of all internal and external modes in natural and 32 S isotopically pure oriented orthorhombic single sulfur crystals using high-resolution Raman and FTIR spectroscopy. Polarized spectra at low temperatures deliver mode frequencies and allow mode assignment to vibrational, librational, and translational character. Experimental data, such as temperature dependent frequencies at constant volume, are analyzed in terms of anharmonic processes. In addition, frequency shifts at the lowest temperature due to isotopic impurities are qualitatively explained by a relative mass defect.