Shabbat: Bioluminescence

You may use bioluminescent light on Shabbat and you may carry the light within an eruv or a building (if it is permitted to carry there), but you may not activate it on Shabbat.
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I just read this halacha, Shabbat: Bioluminescence, at www.practicalhalacha.com. I think you will find it very interesting.