This changes the energy difference between the ground and first excited states.

The energy makes the material to go into what is called an excited state.

The excited states are more interesting, and would take too long to answer in this small space.

But things get strange when we consider the excited state.

The public mind was in a sore and excited state.

The electron is then in an excited state of higher energy.

An electron does not stay in an excited state for too long.

There are many ways in which atoms can be brought to an excited state.

In their excited state they would not have hesitated to do it.

How long does it take the electron to enter an excited state?