andreas richter room u2090 tel: 218 62103 e-mail: richter@iup

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Measurement Techniques Technical Information and Some Hints for the Reports Practical Measurement Techniques, University of Bremen, SS 2011. Andreas Richter room U2090 Tel: 218 62103 e-mail: richter@iup.physik.uni-bremen.de Anna Serdyuchenko room U 4150 Tel: 218 62120 - PowerPoint PPT Presentation

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  • Andreas Richterroom U2090Tel: 218 62103e-mail: richter@iup.physik.uni-bremen.de

    Anna Serdyuchenkoroom U 4150 Tel: 218 62120 e-mail: anserd@iup.physik.uni-bremen.de

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • Practical Measurement Techniques consists of

    a series of lectures about selected measurement techniques in environmental sciencea series of lectures related to the lab experimentsthe lab experimentsan oral exam at the end

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    9 1111 1314 16April 6Introduction (Serdyuchenko)Fourier Transform Spectroscopy(Winkler)Cavity Ring Down Spectroscopy(Horstjann)April 13Satellite Image Analysis(Melsheimer)Radioactivity(Pittauerova)Measurements of Trace Gases (Richter)April 20Meteorological Measurements (Richter)Radioactivity(Pittauerova)Absorption Spectroscopy (Serdyuchenko)May 4DOAS(Richter)Measurement Techniques in Oceanography(Mertens) June 29Summary and Rehearsal(Richter / Serdyuchenko)

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • - * -In total 4 lab experiments have to be completed successfullyThe labs will take place on Wednesdays from 10 a.m. until 5 p.m. if not stated otherwiseThe labs will be performed in groups of 2 students eachLab instructions, including descriptions of the experimental setup, the tasks to be performed and further literature are available for every experiment on the Measurement Techniques website http://www.msc-ep.uni-bremen.de/services/lectures/Measurement_tech_SS11-2.html

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • Please get a copy of the lab instructions from the web at least 2 weeks before the lab takes placeread them carefully if you come unprepared, the tutor will send you home and fix a new date at his convenienceAt least one week before the labs take place contact the lab instructor about the exact time and location of the lab, and perhaps have a first look at the instruments you will useFor each lab experiment a lab report / protocol has to be writtenFor the first two of the four labs each student has to hand in an individual reportFor the remaining two labs one report per group is sufficientA. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • The complete reports have to be handed in 2 weeks after the lab to the tutorIf the report is not accepted by the lab instructor it can be corrected no more than TWICE within two weeks after receiving it from the lab instructor

    A special report form will accompany you through the practical and the review process. This form will be given to you at the end of this lecture and has to be handed in at the end of semester

    You will need this report with all signatures to be admitted to the oral examA. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • Note: If you: fail to show up, are not prepared appropriately, submit a revised report which is still not accepted by the instructor

    you will have to do an additional experiment at the end of the semester to be admitted for the exam.

    Extra experiments can only be done once and should you fail this one also, you will not pass the course.

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • In this set of experiments, you will not be exposed to undue danger by inflammable or hazardous material or ionizing or other harmful radiation. However, you should be aware of some general safety considerations.Dont eat or smoke (this might damage the experiment).If anything is defect, inform your tutor immediately.Never construct, modify, or disconnect electrical circuits under voltage applied.Never look into laser beams.Be informed about emergency exits and fire extinguisher sites.On alert, immediately leave the lab room.Dont cause danger to yourself or anybody else!A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • for each experiment, you will have to submit a reportstudents of the same group submit two separate and two joint reportsafter the experiment, you have 2 weeks for writing the report and submitting it to the tutorreports are prepared with a word processor (word, latex, )the length of the report is typically 6 8 pages the supervisor will read the report and usually ask for some revisions / corrections / additions / changesyou then have another week to submit a corrected reportif necessary, you will have to submit a second revisionshould the supervisor still not accept your report, this will be discussed with the lecturers (A. Richter and A. Serdyuchenko). If all else fails, you will have to take another (additional) experimentonly when all your reports have been accepted, you will be admitted to the oral examA. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • ideally, your report should enable another scientist to set-up a similar experiment, to repeat the measurements and to compare his/her results with yoursit should also give the motivation why things have been done the way they were donefor the purpose of the practical, it should show that you have understood the experimentquestions to answer in the report:What have you done?Why have you done it?How have you done it?What are the results?What are the associated errors?What are the conclusions?A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • Title of the experiment: group and name of the students; dateIntroduction: Short description of the experiment and its objectives Theoretical background: Scientific background on which the experiment is based Experimental set up: Description of the set up used; components and their principle of operationExperimental procedure: Description of each step followed during the experiment, indicating the time and relevant detailsData analysis: Description of the data obtained, analysis and conversion procedures applied to obtain the results for interpretationResults and error analysis: Final numerical and graphical results with the corresponding associated error. A detailed description of the error analysis should also be includedDiscussion of results: Interpretation of the final results in relation to the objectives of the experiment. You can use the questions given in the instructions for the experiment as a guidelineAppendix: Raw data in a table, in graphs or on CDA. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • in addition to the explanations provided in the experiment description and lecture, you are expected to use other sources of information (papers, books, web pages, discussion with your colleagues)any information source used must be acknowledged in the text through appropriate citationsquoting another text verbatim (cut and paste) is usually not acceptable, and has always to be indicated by using quotation marksif you cant say it in your own words, you have probably not understood itquotes from the experiment description are not acceptableusing data or text from the reports of other groups, or using cut-and-paste text from some internet source without reference, is considered to be fraud

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • Graphical representation of data and results is highly recommended , Ein Bild sagt mehr als 100 WorteAll figures must have clear axis labels indicating the quantity plotted and the units used figure captions explaining the contents of the figure figure numbers for reference proper reference and explanation in the textfigures must be large enough to see all the necessary detailsline thickness and symbol sizes must be adequate, colours often helpthe ranges used for x and y axis must be appropriate for the range of values shownindividual measurement points should be shown by symbolsconnecting lines should usually be linear, not spline or polynomials where possible, add error barsA. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011- * -useless

    A. Richter & A. Serdyuchenko, Measurement Techniques SS 2011

  • often, a numerical result is expected from your experimentall numerical results have to be given with unitschecking units often helps to find errorsall results must be accompanied by error estimatesthe number of digits given must make sense with the errors:E = 13.45278456 2.54378 W m-2 E = 13.5 2.5 W m-2E = 3e8 2.5 W m-2 E = 31 786 209 2.5 W m-2all results should be put into context e.g.is of expected order of magnitudelies within 5% of the predicted valueis