The appearance of the spectrum when an incandescent source is passed through sodium vapor is more intense
If a continuous spectrum spectroscope is used, the spectrum will appear as a continuous band of colors, with the colors ranging from red at the low-energy end of the spectrum to violet at the high-energy end. This is because an incandescent source produces light by heating a material to a high temperature, causing it to emit a broad range of wavelengths of electromagnetic radiation. If a line spectrum spectroscope is used, the spectrum will appear as a series of bright lines or bands of light against a dark background. These lines or bands correspond to specific wavelengths of light that are absorbed or emitted by the sodium atoms in the vapor. The pattern of lines or bands in the spectrum is unique to each element and can be used to identify the element.
The appearance of the spectrum will also be affected by the concentration of sodium atoms in the vapor and the temperature of the vapor. If the concentration of sodium atoms is high or the temperature is low, the lines or bands in the spectrum will be more intense, while if the concentration of sodium atoms is low or the temperature is high, the lines or bands in the spectrum will be less intense.
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