(This experiment involves observation of a force, the tension).

They involve meticulous observation, but they are not observant.

Much current research in the social sciences involves close observation over time of the behaviour of a small number of individuals.

Without taking the moment to pat himself on the back, he noticed that quite a bit of this sailing-ship business simply involved common sense and simple observation.

It involves general observation about the patient's positioning.

Usability testing usually involves systematic observation under controlled conditions to determine how well people can use the product.

It will certainly involve close observation and careful thought (see Boxes 8 and 9).

It also involves observation of functions like these:

One experiment called Diatomeya involved observation of ocean surface in order to determine regions best suited for fishing.

Serious surveillance involved air-car observation and an elaborate communications system.