Like concentrating photovoltaic concentrators, these technologies use only direct-beam sunlight, rather than diffuse solar radiation.
喜欢集中光电伏打浓缩器，这些技术使用只有直接-光线日光，并非漫射太阳的放射线。
2
Think of consciousness as a spotlight, with the subconscious controlling when to turn it on and where to direct the beam.
如果把意识知觉当做一个聚光灯，那么潜意识就是它的控制装置，决定灯光什么时候打开，把光束指向哪里。
3
If the two arms have identical lengths, then interference between the light beams returning to the beam splitter will direct all of the light back toward the laser.