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电子太阳镜美国科学家开发出一种可控制透光率的电子太阳镜。这种太阳镜能滤除44%～80%的阳光,而普通玻璃镜只可滤除20%。这种电子太阳镜是在两块玻璃或塑料之间四分之一英寸宽的缝隙中,充以一种特殊悬浮液制成的。悬浮液中漂着无数针形微粒,在玻璃或塑料的内表面敷有一层导电材料,能传导来自微型电池的电流。当电路断开时,悬浮液中的针形微粒随时取向,这种透光率较低,电路通电时,电流产生的磁场使针形微粒定向
Electronic sunglasses US scientists have developed a kind of electronic sunglasses can control the transmittance. This sunglasses can filter 44% to 80% of the sun, while ordinary glass filter can only filter 20%. This electronic sunglasses is made of a special suspension in a quarter inch wide gap between two glass or plastic pieces. Numerous needle-shaped particles floating in the suspension, the glass or plastic inner surface coated with a conductive material, can conduct current from the micro-battery. When the circuit is open, the needle-shaped particles suspended in the liquid orientation at any time, this light transmittance is low, the circuit is energized, the magnetic field generated by current needle-shaped particles orientation