The internal motions are those that involve no overall translation or rotation of the molecule.

But it is desired to study also systems with distinct internal motion and spatial inhomogeneity.

He is well known for his astrometric measurements of internal motions in spiral nebulae.

To describe the internal motions of the spring connecting the two atoms, there is only one degree of freedom.

The equation describes both the c.m. motion and the internal relative motion.

It was all buzzing now, rising in vehemence and falling back, while the judges blurred with internal motion.

Because, as the Cloud approaches the Sun, internal motions must develop inside it.

Rather, they tried to capture the internal motions of the soul.

Data Analysis had told Marx that the dune movement was caused by internal motion.

Analysis of its internal motion indicates that it may contain a large amount of dark matter, as much as a small galaxy.