Tuesday, 14 February 2012

James: A week @ NPL: Day 2

I found myself dragging my feet this morning, this was because after pondering over my experiment in the evening I felt that I only had one roll of the dice left before I may have to retreat home early with my tail between my legs.
So I pottered around doing any other job I could think of before testing my experiment again, eventually just before lunch I bit the bullet (before my sandwich). Amazingly it did something whether it had done what wanted was going to have to wait until after my lunch.
What I had change was the size of my samples, with thanks to the technicians at NPL. To give a little idea as to what I was up to, I was looking to conduct tests on metal samples to see how there resistivity changed with heat treatment but crucially this requires the sample getting hot when you put a high current through it. But yesterday when it didn't work the current density wasn't high enough thus making the samples smaller was an easy way to increase the current density running through the samples as I couldn't increase the current.
So the vital question when I came back from lunch what had happened? Well the exact opposite of what I expected! But as with all science any result is a positive one, you just have to understand what it means.
I have now also set one to run over night so we shall see what tomorrow brings.

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