In order to understand spectral lines, color has to be understood.

A shift in its spectral line, and he'd caught it.

Spectral lines are how scientists tell one element from another by looking at color.

The first term is due to the emission in every single spectral line.

Each substance will have its own unique pattern of spectral lines.

The light was growing brighter at the same time the spectral lines were shifting toward the red.

Matter that is further out will produce a narrow, sharper spectral line.

He established empirical rules for the analysis of spectral lines, which remain associated with his name.

What do you mean, key sets of spectral lines?

Balmer had been thinking about the spectral lines from hydrogen.

In practice, it can be measured as a Doppler effect of the spectral lines.

DC: no strong spectral lines indicating one of the above categories.

Spectral lines such as you mention are in the visible range, sodium is yellow light.

As a result, only three spectral lines will be visible, corresponding to the selection rule.

As a result, spectral lines may shift or split.

This spectrum is filtered to select a single spectral line.

Since each set of spectral lines was unique, scientists could also be able to use this in a technique called red shift.

These spectral lines come in groups, and each group is associated with the radiation from the atoms of one particular element.

Basically, matter moving close to a black hole will move faster, and produce broader spectral lines as a result.

This is expected to result in a changing pattern of spectral lines, a crucial moment for observers.

Numerous factors can contribute to the broadening of spectral lines.

He studied spectral lines and particularly doing work in infrared spectroscopy.

This was the case with his work on the intensity of Zeeman effect spectral lines.

He discovered that a spectral line is split into several components in the presence of a magnetic field.

These observed spectral lines are due to electrons moving between energy levels in the atom.