When Using a gas tube spectroscopy , it give off a certain color or colors when Electrons which are in the gaseous atoms first starts to get excited, and then they tend to fall back to smaller form of energy levels, thereby emitting light that is of a unique color in the process.
What scientist discovered this?
Isaac Newton through his experiment in 1666.
Why does a gas discharge tube have a certain color?
Energy often excited if the electrons in the gases tends to move to a higher energy states.
Note that for them to be able to get back to the ground state, electrons need to let off excess energy and this is often done in the form of light. The light is said to have different color in all of the tube because of they have different wavelengths of light that need to be released.
Therefore, When Using a gas tube spectroscopy , it give off a certain color or colors when Electrons which are in the gaseous atoms first starts to get excited, and then they tend to fall back to smaller form of energy levels, thereby emitting light that is of a unique color in the process.
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