Flash discharge.
Flashtube discharge. Click below to see:
Flashtube in housing.
15W modelling lamp filament image.
30W modelling lamp filament image.
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Photographed at exactly the same scale as the previous picture is the flashtube at the moment of a near-capacity discharge. The gas plasma does not touch the walls of the tube, and therefore the 2.7mm square grid of the 30W Olympus lamp serves as an ideal modelling source.