Item no.: P1522260 Principle With this experiment, you can determine your own personal reading speed. One’s reading speed can be trained and is an important prerequisite for the proper handling of all kinds of texts. You can precisely study the movement of your eyes during the measurement. Tasks Explore your reading behaviour reading easy and
Item no.: P4100160 Principle These measurements help to quickly and simply introduce the term “heat capacity”. The students learn on which characteristics temperature changes of surfaces depend. As practical example, reference can always be made here to the hot sand at the seaside. Tasks To prepare comparison curves showing the different heat capacities of water
Item no.: P2511007 Principle The “Zeeman effect” is the splitting up of the spectral lines of atoms within a magnetic field. The simplest is the splitting up of one spectral line into three components called the “normal Zeeman effect”. In this experiment the normal Zeeman effect as well as the anomalous Zeeman effect are studied
Item no.: P2260100 Principle The angle of rotation of the polarisation- plane of plane polarised light through a flint glass rod is found to be a linear function of the product of the mean flux-densitiy and the length of the optical medium. The factor of proportionally, called Verdet’s constant, is investigated as a function of
Item no.: P2221000 Principle With the aid of two mirrors in a Michelson arrangement, light isbrought to interference. While moving one of the mirrors, the alterationin the interference pattern is observed and the modulation frequency is measured using the Doppler effect. Tasks Construction of a Michelson interferometer using seperate components. Measurement of the Doppler effect via
Item no.: P2540020 Principle An X-ray tube produces X-rays that cause a fluorescent screen to emit light. Objects that are located between the X-ray source and the fluorescent screen will be irradiated so that their inner structure becomes visible. If one varies the anode current and voltage, the change in intensity can be observed in
Item no.: P2522215 Principle The alpha-spectrum of an open 241Am-emitter is measured with a semiconductor a-detector. In connection with a multi channel analyzer the main parts of the spectrum are investigated. Tasks The spectrum of an uncovered 241Am-emitter is recorded with the multi channel analyzer. The energies of the two peaks preceding the principal peak are calculated. The
Item no.: P2538000 Principle Approaching a sharp silicon tip mounted on a cantilever to a sample surface leads to an atomic scale interaction. The result is a bend of the cantilever which is detected by a laser. In static mode the resulting deflection is used to investigate the topography of the sample surface line-by-line using
Item no.: P2530111 Principle The resistivity and Hall voltage of a rectangular germanium sample are measured as a function of temperature and magnetic field. The band spacing, the specific conductivity, the type of charge carrier and the mobility of the charge carriers are determined from the measurements. Tasks The Hall voltage is measured at room
Item no.: P2540101 Principle Spectra of X-rays from a copper anode are analyzed using different monocrystals and the results plotted graphically. The energies of the characteristic lines are then determined from the positions of the glancing angles for the various orders of diffraction. Tasks Record the intensity of the X-rays emitted by the copper anode as a