几天前,在一个能容纳二十几人的会议室里,我见到一台身躯硕大的投影机,一个人抬起它都会觉得吃力。我把随身带来的重量不过一点几公斤的超便携投影机摆在它面前,然后连接好笔记本电脑开始了演示。让与会者惊讶的是,从这个巴掌大的小盒子里投射出的画面,比数年前制造的庞然大物要绚丽夺目得多。我们和投影机打交道的机会越来越多,不过想要看到庞然大物会越来越难,身材日趋“娇小、柔弱”的投影机内部却蕴含着更澎湃的能量,为我们展示更加诱人的图画。Light A few days ago, in a meeting room that could accommodate two dozen people, I saw a huge projector that would be strenuous for anyone to lift it. I put the carrying weight but a few kilos of ultra-portable projector placed in front of it, and then connected to the laptop began the demonstration. To the surprise of the participants, the picture projected from this big, slapdash box was more eye-catching than the monster made years ago. There is more and more opportunities for us to deal with projectors. However, it is harder and harder to see the monoliths. The increasingly petite and weak projector has more energy in the projector, which shows us more attractive picture. Light