Applied physics
Dr Andrew Cramond
8 points * Four 1-hour lecture/problem classes and one 5-hour laboratory class per week * Second semester * Clayton * Prerequisites: Students should have attempted PHS2311 (Option A or Option B)
Objectives On the completion of this subject, students will be familiar with a range of principles necessary for successful measurements and ways of handling experimental data. They will obtain a sound theoretical grounding in ways of obtaining a meaningful signal under a variety of experimental conditions, how to condition and transmit the signal and finally how to analyse and present the data. They will also complete a number of experiments related to the theory which illustrate both the techniques and the applications.
Synopsis This subject provides students with a background in physical instrumentation, monitoring, signal transmission, analysis and presentation of data. It consists of four units: (1) Principles of scientific measurement: Experiment design. Review of DC theory, signal waveforms, shielding, filters, noise. Generalised measurement system models, linear and non-linear cases including oscillating, bifurcating and chaotic. Statistical character of measurement, dynamic character of linear systems. (2) Instrument applications: Analog and digital instruments, bandwidth, averaging and sampling. Convolution and instrument functions. Modulation, signal extraction. Oscillators, amplifiers and power supplies. Computer based instrumentation. (3) Telecommunications and sensing: Types of transducers, characteristics and uses. Data and image transmission methods including cellular radio, data communications, microwave, satellite and optical delivery. (4) Signal and image analysis: Analog and digital signals, introduction to discrete signal and image processing. Statistical analysis, time, frequency and amplitude domains. Presenting experimental data, graphical output, regression, errors and uncertainties, correlations, convolutions. Signal extraction from noise.
Assessment Examinations (4 x 1.5 hours): 67% * Laboratory work: 33%
Prescribed texts
Diefenderfer A J and Holton B E Principles of electronic instrumentation 3rd edn, Saunders, 1994
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