It is a measure of how large the object appears to an observer looking from that point.

He was always the observer looking from the outside.

Many observers look to nature as an ultimate model for production and innovative materials.

However, a moving observer looking at the same set of charges does perceive a current, and thus a magnetic field.

Some observers looked favorably upon her legislative activities, while others said that she should be less involved in politics.

There was a pause while the observer in the other scout looked and confirmed.

The bar is not visible as such from Earth because observers are looking along it lengthwise.

The two observers looked at each other, their expressions showing clearly that this was a question they had feared.

The observer looked closely, searching for signs of intelligence, finding none.

The observers looked for actions like teasing or threatening other youngsters.