Friday, February 29, 2008


I just returned from a physics practical test, and I couldn't be more annoyed. With myself, that is.
So for once, the experiment I'd been given actually seemed to be going pretty well. The aim was to find the Young's modulus of the material of a beam by using an optic lever, scale and telescope arrangement to measure the elevation produced due to the uniform bending of the beam. Yikes.
Anyway, I actually had everything focussed, and all was well. Until I had to use a screw gauge to measure the thickness of the beam. 
Now, one would think that's a relatively simple thing to do. It is. 
Unless you forget all about least counts and so on, and decide 
that the division right after 5 on the pitch scale is 5.1, instead of 6.


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