Item no.: P2430400 Principle A conductor loop carrying a current in an uniform magnetic field experiences a torque. This is determined as a function of the radius, of the number of turns and the current in the conductor loop and of the strength of the external field. Tasks Determination of the torque due to a
Item no.: P2430362 Principle The spatial distribution of the field strength between a pair of coils in the Helmholtz arrangement is measured. The spacing at which a uniform magnetic field is produced is investigated and the superposition of the two individual fields to form the combined field of the pair of coils is demonstrated. Tasks
Item no.: P2420500 Principle Conducting spheres with different diameters are charged electrically. The static potentials and the accompanying electric field intensities are determined by means of an electric field meter with a potential measuring probe, as a function of position and voltage. Tasks For a conducting sphere of diameter 2R = 12 cm, electrostatic potential
Item no.: P2360415 Principle The Stirling engine is submitted to a load by means of an adjustable torquemeter, or by a coupled generator. Rotation frequency and temperature changes of the Stirling engine are observed. Effective mechanical energy and power, as well as effective electrical power, are assessed as a function of rotation frequency. The amount
Item no.: P2410800 Principle The (cooling capacity) heating capacity and efficiency rating of a Peltier heat pump are determined under different operating conditions. Tasks To determine the cooling capacity Pc the pump as a function of the current and to calculate the efficiency rating hc at maximum output. To determine the heating capacity Pw of
Item no.: P2350101 Principle According of Stefan-Boltzmann’s law, the energy emitted by a black body per unit area and unit time is proportional to the power “four” of the absolute temperature of the body. Stefan-Boltzmann’s law is also valid for a so-called “grey” body whose surface shows a wavelength independent absorption-coefficient of less than one.
Item no.: P2320500 Principle A mass oscillates on a volume of gas in a precision glass tube. The oscillationis maintained by leading escaping gas back into the system. The adiabatic coefficient of various gases is determined from the periodic time of the oscillation. Tasks Determine the adiabatic coefficient of air nitrogen and carbon dioxide (and
Item no.: P2320300 Principle By means of the model apparatus for kinetic theory of gases the motion of gas molecules is simulated and the velocities determined by registration of the throw distance of the glass balls. This velocity distribution is compared to the theoretical Maxwell- Boltzmann equation. Tasks Measure the velocity distribution of the “model
(gas laws: Gay-Lussac, Amontons, Boyle) Item no.: P2320160 Principle The state of a gas is determined by temperature, pressure and amount of substance. For the limiting case of ideal gases, these state variables are linked via the general equation of state. For a change of state under isochoric conditions this equation becomes Amontons’ law. In
Item no.: P5160200 Principle An ultrasonic wave transmitted in a sample will be reflected at discontinuities (defects, cracks). From the relationship between the time of flight of the reflected wave and the sound velocity, the distance between ultrasonic transducer and defects (reflector) can be calculated. Position and size of these defects can be determined by