What is a lab report?
The purpose of this experiment was to identify the specific element in a metal powder sample by determining its crystal structure and atomic radius. These were determined using the Debye-Sherrer powder camera method of X-ray diffraction.
A good introduction also provides whatever background theory, previous research, or formulas the reader needs to know. Usually, an instructor does not want you to repeat the lab manual, but to show your own comprehension of the problem.
If the amount of introductory material seems to be a lot, consider adding subheadings such as: Theoretical Principles or Background. Note on Verb Tense Introductions often create difficulties for students who struggle with keeping verb tenses straight.
These two points should help you navigate the introduction: The experiment is already finished. Use the past tense when talking about the experiment. Methods and Materials or Equipment can usually be a simple list, but make sure it is accurate and complete.
In some cases, you can simply direct the reader to a lab manual or standard procedure: Experimental Procedure describes the process in chronological order. Using clear paragraph structure, explain all steps in the order they actually happened, not as they were supposed to happen.
If your professor says you can simply state that you followed the procedure in the manual, be sure you still document occasions when you did not follow that exactly e.
Results are usually dominated by calculations, tables and figures; however, you still need to state all significant results explicitly in verbal form, for example: Graphics need to be clear, easily read, and well labeled e.
Input Frequency and Capacitor Value. In most cases, providing a sample calculation is sufficient in the report. Leave the remainder in an appendix. Likewise, your raw data can be placed in an appendix.
Refer to appendices as necessary, pointing out trends and identifying special features. Discussion is the most important part of your report, because here, you show that you understand the experiment beyond the simple level of completing it.
By that, they mean this is what is not readily observable. Analysis What do the results indicate clearly?
What have you found? Explain what you know with certainty based on your results and draw conclusions: What is the significance of the results?
What questions might we raise? Find logical explanations for problems in the data: Since none of the samples reacted to the Silver foil test, therefore sulfide, if present at all, does not exceed a concentration of approximately 0.
It is therefore unlikely that the water main pipe break was the result of sulfide-induced corrosion. Although the water samples were received on 14 Augusttesting could not be started until 10 September It is normally desirably to test as quickly as possible after sampling in order to avoid potential sample contamination.
The effect of the delay is unknown. More particularly, focus your discussion with strategies like these: Compare expected results with those obtained. If there were differences, how can you account for them?
Be specific; for example, the instruments could not measure precisely, the sample was not pure or was contaminated, or calculated values did not take account of friction. Was it a result of equipment? If an experiment was within the tolerances, you can still account for the difference from the ideal.Build rev #Toggle navigation.
# # Lab reports are written to describe and analyse a laboratory experiment that explores a scientific concept. They enable you to conduct scientific research, formulate a hypothesis about a particular stimulus, event, and/or behaviour, and review relevant literature to justify your hypothesis.
* Make sure this possible solution is a complete sentence. * Make sure the statement is testable, an if-then statement is recommended to illustrate what criteria will support your hypothesis (and what data would not support the hypothesis). * Identify the manipulated (independent) variable and the.
Sample Reports: Lab Handout Sample Lab Report #1. Contents: Introduction Procedures Results and Discussion Appendix. (ME ) at Virginia Tech. Accompanying this report is a Lab Handout that states what the instructors expected as far as the scope of .
What Is a Lab Report? Lab reports make a major part of each laboratory course, being important contributors into the final grade. Instructors may ask to either include it in the notebook or bring it . Build rev #Toggle navigation. # #