No idea what they were doing, but it looks pretty.

Part of a physics experiment at our local university. They were shining a laser at a copper spring, but quite what they expected to get from it I haven’t a clue. Very pretty, though.

Camera: Nikon D90          ISO: 1250          Focal Length: 105mm          Aperture: ƒ/5.6          Shutter Speed: 1/30