Flashcubes were formerly flash “bulbs” which were occasionally known down South and around the trailer parks of Pennsyltucky as flash “bubs.” I have some, you bet I do and here’s your free tip about flashcubes if you’re using the Polaroid bigshot anytime soon – MAGICUBES. They’re better. They’re brighter. If you happen to be in front of one when it blasts get ready for a full minute of blue dot total blindness. Magicubes. Who makes ’em? Good question. Answer is nobody, idiot. They’re from the 60’s. Who used to make ’em? Sylvania, G.E. and Westinghouse mostly but Sylvania Magicubes are the only ones I trust and I tried ’em all. So remember now, Magicubes by Sylvania (like TRANSylvania but without the reassignment surgery.Now you’ll definitely remember.) Blue dots forever! You can close your eyes if you want to BUT IT DOESN”T GO AWAY!!!
Well gee uncle Billy, how do these magic cubes work?
Not magic cubes, kid. MAGICUBES. Two words in one – got it? Now put down your phone and I’ll tell you how they work and you’re going to be surprised because they actually have gun powder in them…like bullets…which kill people because of guns. Anyway, it’s like this….
The flashbulb is filled with combustible material (zirconium wool sealed under high pressure) and its base has a powder filled primer cap. When the shutter is released, a tiny hammer linked to the shutter release mechanism is actuated that strikes the base of the bulb setting off the charge in the primer. The primer in turn fires a flash charge that ignites the combustible mixture in the flashbulb producing flash of very high intensity.