…lets see what they look like.
These days I work with X-Ray systems. I’m just finishing up commissioning and testing of the latest one, so I’m using it to image various things.
This is a compact fluorescent lamp. At full size you can see the coils of tungsten wire in the electrodes in the glass spiral, you can also see some tiny droplets of condensed mercury at the end of the spiral. It;s this mercury that’s essential for the operation of the lamp, but is also what makes them (slightly) hazardous if the glass breaks.