Experiments in winter semester
Experiments in winter semester
General notes for the laboratory course, on preparing and conducting experiments, the preparation of laboratory reports and the presentation of results, the usage of the lab computers, about setting up electrical circuits and information about mechanical measuring tools; introduction/tutorial for the programs MATLAB and ORIGIN.
- Introduction / Translation of German denotations in the instructions
- About the set-up of electric circuits
- Mechanical measuring tools
- About the use of computers
- Hints for the design of presentations
- University flyer "Good Scientific Practice"
- Information about module marking
- Safety precautions and laboratory rules
- Exercises MATLAB and ORIGIN
Keywords: Measurand, measured value, result of measurement, uncertainty, systematic and random errors, histogram, density function, gaussian distribution, probabilities, mean, standard deviation, variance, root mean square error, absolute and relative errors, maximum error, error propagation, accuracy, linear regression, linearization, correlation, errors of weighted means.
Keywords: Anode, cathode, cathode ray tube, electron deflection, deflector plates, trigger, AC/DC coupling, direct voltage, alternating voltage, frequency, radian frequency, period, amplitude, phase, phase difference, peak and effective value of alternating voltages, Lissajous figures, harmonic oscillation, peak and effective values of alternating voltage
Keywords: Ohm's law, Kirchhoff's laws, directions of currents and voltages, measurement of currents and voltages, bridge circuits, Wheatstone bridge, strain gauges, internal resistances of ideal and real voltage sources, internal resistances of measuring instruments, range selection for measuring instruments, current-, voltage- and power compensation, specific resistance of tap water.
Keywords: Parallel-plate capacitor, charge and discharge curves, RC-elements, measurements of capacitance, capacity of parallel plate capacitor and coaxial cable, measurement of the relative permittivity of PVC, phase shifts, calculation using complex quantities.
Keywords: Sensor, linearity, time constant, measurement range, resolution, noise, bending rod, strain gauge, force sensor, piezoresistive effect, pressure sensor, manometer, triangulation, laser distance sensor, Hall-effect, angle sensor, semiconductor, doping, pn-junction, barrier layer, fotodiode, spectral response.
Keywords: Conservation of momentum and energy, energy transfer in collisions, elastic, inelastic, and totally inelastic collisions, central and oblique collisions, scattering angle, laboratory- and centre-of-gravity system, vector algebra with MATLAB.
Keywords: Viscosity and kinematic viscosity, Stokes law, falling ball method, capillary viscosimeter, laminar and turbulent flow, pipe flow, Reynolds numbers, continuity equation, Bernoulli's law and Hagen-Poiseuille's law.
Keywords: Harmonic oscillator with and without damping, damping constants, eigenfrequencies, forced harmonic oscillations, resonance behaviour, amplitude- and phase measurements, amplitude-, energy- and phase resonance curves, calculation using complex quantities.
Keywords: Linear systems, Fourier series and Fourier coefficients, amplitude transfer function, amplitude spectrum, frequency response, phase spectrum, sampling theorem, beat, amplitude modulation, Fourier analysis of square-, triangular-, and sawtooth signal, Gibbs phenomenon.
Keywords: Breaking-off method, bubble pressure method, emergence and form of minimal surfaces, capillary flows, matter transport in fluids, interior pressure of gas bubbles, sensors for force and pressure.