Researchers can directly measure forces, which is not easy to do in live fish.

In practice this is not usually directly measured by patients or doctors.

It is such a vital concept and yet very difficult to measure directly.

The site and location of such features should be directly measured.

The other new features mentioned but not directly measured were interesting, too.

Its diameter has been directly measured to be 1.7 times that of the Sun.

There is also less disability among older people today, according to a federal study that directly measures it.

It is even possible to directly measure the performance of print advertising.

It can be measured directly using the quantum Hall effect.

In such a case the increase is too small to be measured directly; even with the most sensitive balance.