TEKNO BUBBLES are patented, safe non-toxic blowing bubbles that look and act like normal bubbles under regular lighting, yet are unlike any other bubbles in the world. Gold Tekno Bubbles have a beautiful, brilliant glow under UV (blacklight) lighted conditions. Wand not included. Great for Bubble Machines Size: Half Gallon bottle, Color: Gold The key to fluorescence is harnessing the energy of black light - turning invisible light into light we can see. All light is a form of electromagnetic radiation and it has a dual character - behaving simultaneously like a wave and like a stream of particles called photons. The photons we humans can see (the visible light spectrum) is red at one end, green in the middle, and violet at the other end. The colors can be characterized by their wavelength as well as the energy of their photons. Red has the longest wavelength and the least energetic photon, while violet light has a shorter wavelength and more energy. Teknology Just beyond the violet light in the visible spectrum is an invisible ultraviolet light, what is commonly known as black light. TEKNO BUBBLES contain special patented compounds with molecules that emit visible light after absorbing light from an invisible ultraviolet source. When the ultraviolet photons enter fluorescent molecules, some of the light's energy causes the molecules to vibrate. When the light re-emerges, it has less energy and is now within the spectrum of visible light, which in turn causes our patented Tekno Bubbles to appear to GLOW CRAZY WILD!