A Spectrum Tube in USA is a type of discharge tube used in physics and chemistry to produce light through the excitation of gas atoms or molecules inside the tube. When an electrical current passes through the gas, the energy excites the atoms, causing them to emit light at characteristic wavelengths. Spectrum Tube in USA, The resulting light is often observed as a colored glow and ca... https://www.spectrumtubes.com/blog-detail/spectrum-tubes-in-usa