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Blue and Green Glow Bricks recharge from natural sunlight by day to give off a glow by night making them completely environmentally friendly night lights. Glow bricks have no batteries or power leads, but diffract the light in the minute space between the light bulb and the solid acrylic block. A real light bulb is encased in a block of polished resin, slowly releasing absorbed energy in the form of light. The techie term for the glow-in-the-dark is ‘photoluminescence’, which is a great word to impress your friends with! Glow brick glow-in-the-dark night light Choose from Blue or Green No batteries or power leads Eco-friendly glow light Measures H11.5cm W8.5cm D8.5cm (4.5x3.3x3.3in)
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