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[[File:Macro Photography of a soap bubble.jpg|thumb|left|A single light soap bubble photograph taken under macro photography]]
A bubble is made of transparent water enclosing transparent air. However, the [[soap film]] is as thin as the visible light [[wavelength]], resulting in [[
Byron, Melody & Enoch Swetland invented a patented non-toxic bubble (Tekno Bubbles)<ref>{{cite web |author=Mary Bellis |url=http://inventors.about.com/library/weekly/aa061500a.htm |title=Interview with Byron and Melody Swetland - The Inventors of Tekno Bubbles |publisher=Inventors.about.com |date=1999-10-05 |access-date=2013-10-04 |url-status=live |archive-url=https://archive.today/20130704191253/http://inventors.about.com/library/weekly/aa061500a.htm |archive-date=2013-07-04 }}</ref> that glow under UV lighting. These bubbles look like ordinary high quality "clear" bubbles under normal lighting, but glow when exposed to true UV light. The brighter the UV lighting, the brighter they glow. The family sold them worldwide, but has since sold their company.
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