pepparkaka

Today we've finished all our lab reports... okay maybe not all of them, but some are finished.... okay maybe not finished but kind of. We went through all our reports and added some more details to make them even better as they even were. Of course we decorated the reports with our nice pictures. We discussed a lot of stuff in the group and discovered some interessting new points.
For lunch time we ran to "Matsalen" because we exactly knew, that there's a delicious "julbuffé" waiting for all the students.
In the afternoon we continued our work seriously and now we're just waiting for Thursday evening, for Christmas break!!

Today we have worked on our last lab which is the theoretical lab. It is going quite well actually. This lab wasn't as hard as we thought. Though we really have some problems with the part that you were supposed to do in excel. The excel task is so unnecesary and demands a lot of time. We are seriously starting to question whether Peter doesn's like his student for giving us this horrible task.

The other labs we are almost done with. After we have finished this last lab we are planning on looking through all the labs we have done and do some minor changes and add a few thing. Then we will be done and ready for our break!

Here are some pictures from the second (ice-melting) lab we did last Wednesday. You know what they say.. better late than never

What a wonderful day! It is raining outside, one person is home, sick, one person had a cold today, one person is angry and the last person is tired. Anyway, with so many forces in one group, we managed to measure a human force. We were very creative. With some ropes, a timer, weights and a floor-ball goal we did the last measurements for physics lab 3. Now we gonna role home with our stomaches full of porridge and lussebullar. Have a nice weekend!

This day was not so successful. We could not find our beautiful green basket and therefore we had to take a long silent minute to mourn...

We are very worried about our fourth group member - Emily! She has been ill for two days and she's not answering her phone. At the same time, the green konsumkorg which we should use for our experiment has disappeared. Has somebody carried away her in it? If anyone knows anything, please contact us! 

Today at exactly 9.00 we started with our 2nd chemistry lab. Of course we tried to do our lab as good as possible so we started to find out the best way to accomplish our measurements.
With a tasting of the four different alcohols we definitely set the starting point of todays lab. Afterwards we boiled 100ml water above all the liquids (Ethanol, Butanol, Methanol, Propanol). We put the water in our favourite conical flask and got it ready for the "Nobelparty" by vesting it with a really nice aluminium dress. We heated the water until it was 40°C warmer. Caroline's best experience today, was to find out that hot aluminum is quite hot and that's really easy to burn the fingers when playing with fire. When we were finished, she had soot up to her elbows...

The day started with a workout, almost. We visited the local gym at Norrängsgården, talked nicely to the staff and got free access to the training devices by telling them that we would like to borrow a couple of dumb-bells for doing an experiment. We lifted the weights  in different kinds of ways and measured the time, and by doing this we tried to calculate how much a human power is. It was close to the expected, about 7,5 kg, 1 meter in one second, but our results was a little higher, we manage to lift about 10 kg. 

We have found the definition for horsepower and therefore have came to the conclusion that a good idea would be to use that definition in order to find a good value for manpower. One horsepower means how much a horse can lift 1 metre during one second, which is 75 kg. Tomorrow, we have decided to go to norrängsgården and see how many kilograms we can lift one metre in one second on a barbell. According to wikipedia, a horsepower is about 10 times greater than what a normal man can bear, so the expected value for manpower is about 7,5 kg.

We have also thought about trying to push a wagon and see how heavy it could be.

Today we have done our second lab. It was basically to melt ice. Though it seemed like a really easy lab to melt ice the calculations are pretty hard. Our first try in the lab did not go so well but after that we got the hang of what we where supposed to do. From our first lab we learnt the importance of making sure we are doing everything exactly according to the intructions. This probably saved us a lot of time today. We are working the calculations in our lab report right now. As in our first lab a big part of our lab report will be tables.

We are still not ceratin which part of the lab we are supposed to do induvidually since non of the teachers have given us the same answer...

We have thought a little about how to measure manpower, but we have not yet found many ways of doing it. The idea came up to press a scale against the wall as hard as possible and see what results one would get. Maybe we will try that later on. 

After starting the day with a lecture about energy we carrued on yesterdays work...Began on the lab raport for the physics lab nr2. It was A LOT of calculations to put into a nice little diagram, but finally we made it! We actually found out that the enenrgy law (energiprincipen) agreed to our results if we ignored the air resistance and the friction in the tempograph.

Our little assistant in the calculations! ;P

Dot machine for measuring time







Lots of work before we got it right



Hard working group members and Gunnar =)