Huh? The luminisence is for very short periods of time, but I don't believe it's particularly challenging to detect. I would imagine it's more challenging to setup the chamber. The first paragraph of the wikipedia article should tell you it's not that hard to detect:
"H. Frenzel and H. Schultes put an ultrasound transducer in a tank of photographic developer fluid. They hoped to speed up the development process. Instead, they noticed tiny dots on the film after developing and realized that the bubbles in the fluid were emitting light with the ultrasound turned on."
Other articles suggest photomultipler tubes have been used, with which you can detect single photons. PMT are relatively cheap (I've seen them for ~30USD on ebay), the motivation seems to be to get good time domain resolution. Even so other pages suggest that around 500,000 photons are produced. This should be relatively tractable.
Obviously it's not as easy as making an LED flash, but I can't see that it would be intractable for a hobbyist.
"H. Frenzel and H. Schultes put an ultrasound transducer in a tank of photographic developer fluid. They hoped to speed up the development process. Instead, they noticed tiny dots on the film after developing and realized that the bubbles in the fluid were emitting light with the ultrasound turned on."
Other articles suggest photomultipler tubes have been used, with which you can detect single photons. PMT are relatively cheap (I've seen them for ~30USD on ebay), the motivation seems to be to get good time domain resolution. Even so other pages suggest that around 500,000 photons are produced. This should be relatively tractable.
Obviously it's not as easy as making an LED flash, but I can't see that it would be intractable for a hobbyist.