Optical

Homebuilt CO₂ gas lasers My early (2003-2004) attempts at building several CO₂ lasers

Zeeman effect An old page with photos of the Zeeman effect experiment I did at university

Sodium street lamp Old sodium street lamp running from an NST

Uranium marbles Some pictures of uranium marbles fluorescing

RF CO₂ laser head Some pictures of the insides of a folded-resonator laser head.

Digital camera spectroscope Attaching a direct-vision handheld spectroscope to a digital SLR camera

Running a mercury arc lamp from a TIG welder Using the HF start on a TIG welder to trigger an arc lamp and run it

Arc lamp attachment for a TIG welder Attachment for a TIG torch to turn it into an arc lamp