“引力透镜已经是天文学家的工具箱里一件成熟的有竞争力的工具。”马歇尔说。
"Gravitational lensing has come of age as a competitive tool in the astrophysicist's toolkit," Marshall said.
这种用途的透镜有各种不同的名称：放大镜，简单放大镜或简单显微镜。
The lens so used is referred to variously as a magnifying glass, a simple magnifier or a simple microscope.
加拿大香脂：从香脂冷杉中获取的一种有粘性的，淡黄色的透明树脂，用作玻璃透镜的胶合剂或将标本粘贴在显微薄片上。
Canada balsam: a viscous yellowish transparent resin obtained from the balsam fir and used as a cement for glass lenses and for mounting specimens on microscopic slides.
应用推荐