spacetime fabric   Leave a comment

This is a darkfield image (16x) of a mirror.

This mirror is called a ‘first surface’ mirror- there is no protective covering on the reflective surface. This one has been used to align and adjust the laser tweezer, and has been around for a couple of years. What happens over time is that cleaning the mirror degrades the aluminum: it wears off, small bits of dust make scratches on the surface, etc.

I like this image because it reminds me of how we portray spacetime in special and general relativity- lines represent objects, and intersections of lines occur when two objects interact. The hazy background reminds me of interstellar dust clouds, which fits in with the spacetime theme.


Posted September 2, 2010 by resnicklab in pic of the moment

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