What is a hydrogen spectrum tube?

EISCO spectrum tube is used for demonstrating spectral lines of pure substances, and contains hydrogen (H) gas under pressure to produce light for spectral analysis. The tube has a 10.0cm capillary in the center for observing light wavelengths, and is straight form with side electrodes for conductivity.

What is the definition of hydrogen spectrum?

The hydrogen spectrum is an important piece of evidence to show the quantized electronic structure of an atom. It results in the emission of electromagnetic radiation initiated by the energetically excited hydrogen atoms. The hydrogen emission spectrum comprises radiation of discrete frequencies.

What is a spectrum tube?

Spectrum tubes are glass tubes filled with a gas, usually that of an element or small molecule. As the electrons relax, they emit light-a characteristic color for each gas. When students view the lighted tube through a spectroscope, they can observe the unique set of spectral lines for each gas.

What is the hydrogen spectrum used for?

The spectral series are important in astronomy for detecting the presence of hydrogen and calculating red shifts. Further series for hydrogen as well as other elements were discovered as spectroscopy techniques developed.

How to describe the atomic spectrum of hydrogen?

12.3: The Atomic Spectrum of Hydrogen. A hydrogen discharge tube is a slim tube containing hydrogen gas at low pressure with an electrode at each end. If a high voltage (5000 volts) is applied, the tube lights up with a bright pink glow. If the light is passed through a prism or diffraction grating, it is split into its various colors.

What kind of gases are in spectrum tubes?

Available gases include air, argon, bromine vapor, carbon dioxide, chlorine, helium, hydrogen, iodine vapor, krypton, mercury vapor, neon, nitrogen, oxygen, water vapor and xenon. Spectrum tubes are glass tubes filled with a gas, usually that of an element or small molecule. Sealed metal electrodes are located at the ends of each tube.

Where are the electrodes located in a spectrum tube?

Sealed metal electrodes are located at the ends of each tube. When a spectrum tube is placed in a spectrum tube power supply and the power supply is turned on, an electrical discharge is passed through the tube, causing electrons in the gas to be excited. As the electrons relax, they emit light-a characteristic color for each gas.

Where are the hydrogen discharge lines in the spectrum?

The photograph shows part of a hydrogen discharge tube on the left, and the three most easily seen lines in the visible part of the spectrum on the right. (Ignore the “smearing” – particularly to the left of the red line. This is caused by flaws in the way the photograph was taken.