"I can't help you on a thing like thatl How can I know or report the exact mass, length, and -orientation of single hairs?"

In this way his experiments determined the exact masses of uranium required to fire the Little Boy bomb over Hiroshima.

It has the exact same mass and reacts the exact same way to gravity as "normal" matter.

Many attempts were made to reconstruct the exact mass of the Roman pound.

Replies: The atomic masses you see on a periodic table are not the exact masses of the element.

The development of the mass spectrometer allowed the exact mass of atoms to be measured.

The exact mass of the Higgs is not predicted by the model, but must be measured in experiments.

There is controversy as to the exact masses of the stars.

Practically the only thing we don't know about it is its exact mass.

How can I know or report the exact mass, length, and orientation of single hairs?