Wearable Electronic Flash
Painting with lightvectors (a.k.a. "Dusting") requires a very
powerful flashlamp.
This is how I hold and aim
the world's most powerful electronic flash (40kJ), which I configured
as a body-worn tetherless apparatus.
(I use it for architectural "lightpainting".)
Take a closeup look, or,
if you have a fast net connection,
you can load a larger picture of the lamp
just before ignition, and
during ignition.