Its effects are easily observed such as light and heat.

There are many more differences that can be easily observed by reading the book and then watching the movie.

The fact that the sky is not completely dark at night can be easily observed.

Patients were allowed to smoke in rooms where they could not be easily observed.

Out of these 70, only 25 to 30 are easily observed by the visitors and tourists.

What is important is that the costs of community services are not easily observed.

Aircraft movement on the airfield can be easily observed from the museum.

You can easily observe this phenomenon while standing at the edge of a surf line.

Any one may easily observe this in his own thoughts, who will take the pains to reflect on them.

"I'm just getting back from a trip down in the valley," Nolan observed easily.