新世界的光最近,波士顿大学的弗雷德.舒伯特教授发现了第三条道路。它将蓝光LED和发出黄光的半导体结合在一起,蓝光和黄光组合成一种肉眼看来像是白色的光。这种“假白光”中没有红光成分。使用LED,每天只要有一个人花半小时的时间踩动发电机的踏板,就能为整个村庄的居民提供平均长达4个小时的照明时间。对不发达国家中电网无法进入地区的居民来说,LED将意味着一个光明时代终于到来。 New World Light Recently, Professor Fred Schubert of Boston University discovered the third way. It combines a blue LED with a yellow emitting semiconductor, and blue and yellow combine to form a light that looks white to the naked eye. There is no red component in this “false white light.” Using the LED, one person only spends half an hour a day pedaling the pedals of the generator, providing an average of up to four hours of lighting time for residents of the entire village. For residents of underdeveloped countries where the electricity grid cannot enter the area, LED will mean that a bright era has finally arrived.