Physics Experiments: how to survive them
Created | Updated Feb 23, 2005
This is intended as a guide to surviving first year labs at a university. I expect that the stratagies in this article can be applied to other fields, too; however since I only study physics I have not been able to try them out.
Something to note is that Newton was in fact wrong, there is an inertial reference frame where the laws of physics are inconsistant, and its called first year lab!
You know you're going to have to perform an experiment when...
They have given you a script1 and told you to check on the noticeboard to see which experiment you have to do first. They have also told you to go and buy a lab book2 for you to write up the experiment in.
This is a good sign, it shows that they are expecting you.3 Now try to find a lab book4. Remember your lab book needs to be able to survive the rigors of experiments, and probably even worse... your bag!
Have you checked the noticeboard yet?5 You may notice that someone else is either doing the experiment with you, or is doing the same one as you. This is good. Find that person, and agonize with them about how nervous you are. Make them nervous too. This is very important for the success of your experiment, as you do not want someone around conspicuously doing better than you.
Next, and this is very important: Do not, under any circumstances try to read the lab script before you do the experiment. Let them say "I hate walking into laboratories and seeing all the students sat there looking at their books," as much as they like, this is never a good thing to do. Reading scripts before entering the lab leads to all sorts of bad feelings such as self doubt, panic, hyporchondria...don't do it. If possible, discourage your partner as well.
Performing the experiment
Then the time arrives, you have to go to the lab,
Don't panic
Although all of those ...uh... things6 on the bench looks strange to you, its going to be all right. Take a deep breath, and open your script.
Miraculously, all of these things will not become understandable when you read the script. This is okay too. Take it slowly, skip the theory, and try to work out exactly which bit in the picture matches which bit on the table. Ask your partner, if you have one. Hopefully, s/he will be equally mystified. After staring for a while, one of you may work out what is what. At this point again you may be tempted to panic, so much to do, so little time... don't. Its okay. Since almost all labs do not work, you need to find the flaw with this one. What is it that doesn't align correctly? Are you seeing two Sodium D lines where there should only be one? Get the demonstrator!7 The demonstrator will hopefully know as little about this as you. Keep asking them questions... "does it help if I do this?" "should it look like that?" Try to involve your partner, too. This hopefully will slow the demonstrator down, but eventually they will find a way of letting you do at least some form of your experiment.
But oh no! Is that the time? You only have enough time left to do the easy readings! Take them, go, and be glad.
Writing up your experiment
Finally, you have to write your experiment up. Leave this until the night before you have to hand it in, you'll waste, sorry, spend less time on it this way. One problem. Your results are incomplete. But you have to say that it didn't work properly. And it wasn't your fault. This is good: you do not have much data to analyse, and you have covered the fact that you may not have been able to take the readings properly anyway. Hand it in with a sigh of relief; one down, eleven more left this term!