That means that if lithium niobate is exposed to an electric field, light will travel more slowly through it.

When atomic nuclei are exposed to a magnetic field, they emit radio waves at a consistent frequency.

These fragments are then placed on a sheet of clear jelly-like substance and exposed to an electric field.

M.R.I.'s work by picking up radio waves from human tissue exposed to a magnetic field.

This is induced by exposing a magnet to a large alternating field plus a small dc bias field.

Magnetostrictive materials slightly change size when exposed to a magnetic field; such materials can be used to make transducers.

When exposed to an external magnetic field, these microbeads become magnetized.

To get at the stable part, they took to "cleaning" samples by heating them or exposing them to an alternating field.

The Stern-Gerlach experiment - where an atom is exposed to a magnetic field - provides one such example.

The molecules are then cut apart by enzymes, placed in a gelatin and exposed to an electric field that causes the fragments to move about.