This special kind of laser has several curious properties, one of which is known as "the observer effect" - its quantum state cannot be observed without changing it.

这种特殊光束有很多特质，其中一个就是所谓的“观测者效应”，其量子状态一旦发生变化就会被观测到。

youdao

First, characters in the middle of a scene will often glance at the camera, a disconcerting aside that has the effect of making the viewer feel both like a part of the family and an observer.

第一，剧中的角色时不时会看一眼摄像机，这就可以让观众有一种身临其境的感觉，同时还感觉处在观察者的地位。

youdao

She said she thought he was "balancing the tendency to be always the observer" with "how to effect change."

她在日记中说，她以为他是在平衡“观察者的倾向”和“如何做出改变”之间的关系。

youdao

But the presence of the tiny but growing U.N. observer team is having a "dampening effect" on the violence, Ladsous said.

CNN: Rights group: 'Annan plan has been ineffective'

But the presence of the tiny but growing U.N. observer team is having a "dampening effect" on what has been an atmosphere of "appalling" violence, said U.N.

CNN: U.N. notes cease-fire violations from both sides in Syria

This is that a lens produces its biggest effect when it is halfway between source and observer.

ECONOMIST: Cosmology: I spy with my little gravitational lens | The