Spectrum Tubes – code: 4470.10-50

4470.10-50

Spectrum Tubes

Code: 4470.10-50

Excitation of the gas in the tube produces light

Spectrum Tubes are an effective tool to teach the effect of gas excitation and visible light emission.

Our Spectrum Tubes can also be used together with the Spectrometer (code 4455.02) to analyse the spectra of gases in the different tubes. Spectrum Tubes can easily be mounted on our Tube Holder that protect them against accidental shocks. Tubes of different gas types are available.

Specifications
All items are sold separately
Spectrum Tubes Holder with
Ballast Resistance (code 4470.50)
Size: 12x12x36 cm
Weight: 0.1 kg

Equipment Needed
5 kV Power Supply (code 2407.05)

Gas Tubes
Size: 1x1x23 cm
Weight: approx. 20 g
Helium (code 4470.10)
Neon (code 4470.11)
Argon (code 4470.12)
Mercury (code 4470.13)
Hydrogen (code 4470.14)
Oxygen (code 4470.15)
Nitrogen (code 4470.16)
Carbon Dioxide (code 4470.17)

LAWS AND PRINCIPLES INVESTIGATED

  • Light from excited energy levels
  • Monochromatic light

EXAMPLE OF USE: Monochromatic light emission

The principle behind neon lamps

Hydrogen vapour lamp is a gas discharge lamp which uses the excitation of the atoms to produce light. Very high voltage between the anode and cathode plates causes the hydrogen atoms to move to an excited state. When the atom reverts to its stable condition, a definite quanta of light is emitted. This observed spectral line is the energy associated with the first energy level state of the atom and its normal fundamental state.

Hydrogen light emission detail

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