This is shown below with the known colors from the atomic emission in the CFL annotating the spectrum. The spectroscope assembly discussed above can be quickly modified to include a sample holder as ...

The first, somewhat furtive, signal from element 63 was recorded in 1885 by Sir William Crookes, who found an anomalous red line (609 nm) in the emission spectrum of a samarium sample.

When a gas is very hot, it doesn’t emit all wavelengths of light. Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the ...

This causes line emission spectra to be produced, as shown below. This is not a continuous spectrum as only light of specific frequencies and specific colours are produced. Different types of ...

The scattered light is displaced in wavelength from the laser emission because of contact with sample molecules. The wavelength spectrum of the measured light then serves as a chemical fingerprint ...