Wednesday January 10, 2012
We didn't do much on Wednesday. For most of the time, JM helped Seung Ha with her project while I was able to do my work. This was all we did for the first two hours. He wanted to make sure that we could actually do a little bit today, so he let us decide what we wanted to do. We chose that we wanted to work with liquid nitrogen again. I've said this in a previous blog but the liquid nitrogen is really cool because the gas is denser than air, so the gas sinks to the ground. Previously, he has showed us how to freeze the liquid nitrogen. This time, he showed us how to thaw it. All that he did was place a small tube of it into a water bath and whirl it around until it unfroze. Then he placed it into a machine to see the size of the particles. The particles ended up being a bit larger than what he expected. They were around 80 nanometers while he expected them to be around 50 or 60 nanometers. I know it's not much but this was all we really did today.
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