He paused for a moment to observe the effect his words had on the participants.

Without waiting to observe the effect of my shot I left the house.

In the course of the day we observed the powerful effect .

I observed the splendid effect of our fire with the glass.

To observe the effect you need to modify your experimental set up.

"I want you to observe the effect before you're involved with it."

He instructed the technical staff to observe the effect of the explosion.

Admiral, will you give us an escort ship to take off our other people and stand clear of the field, observe the effect?

He fired twice, quickly, and paused to observe the effect.

She pulled back a little, to observe the effect of herremarks.