The first time I did the experiment I accidentally used galvanized bolts which changed the results very much. I've made a chart to show the differences between experiment one (Ex1) and experiment two (Ex2).
Details of experiments:
Ex1: Large Bolt 11cm. Small Bolt 5.5cm (galvanized bolts) Volume of water 150ml
Ex2: Large Bolt 8.5cm Small Bolt 2.0cm (non-galvanized) Volume of water 50ml
Dr Luna Spacey
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3 comments:
Hi Dr Spacey,
I'm wondering about the bolts what is their mass? I am getting frustrated because when I try to repeat the experiment I don't get the same results! Now I thinking my bolts may be thinner. The best was to know that we are heating up the same amount of matter is if the bolts have the same mass. Could you please weigh your bolts and post a comment to let me know there mass?
A fellow scientist
i have sent some pictures that i hope will be posted soon but until then i guess i'll just have to answer by describing things. the mass of the non-glavanized bolts (the ones you should be using) are as follows.
large bolt - 59g
small bolt - 6g
thanks for those masses Dr Spacey,
and now I see the pictures are up on the BLOG. I have the whole things figured out!
Its amazing when you stop to think that the way those bolts are transferring that enegy from the boiling water bath to the test tube by faster movement of tiny particles? Have you ever seen the molecular workbench software? You can get computer animations of this, they are fabulous.
thanks again,
Dr B.
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