Question

Question 4

bration curve vor a) Dere ground state to am b) Calculate the wavelength or um lamp is used to generate a calibratio ound state. Give the answer in units .. has a standards itional light source such as a sta stify your answer. as sunlight also be appropriate? Justify your in the first part of this experiment a Helium lamp is used reading vs. wavelength. a) Why is a Helium lamp used instead of a more traditional light Tungsten-filament light bulb? b) Would a white light source such as sunlight also be ann

Answer 1

a). The basic requirement of a calibration source lamp is

i). it should be able to give unambiguously fine (sharp) lines to give an accurate idea of the positions

ii). it should show multiple lines to cover the whole range of wavelengths (entire spectrum)

Helium lamp fulfills these basic requirements and can be interpreted as a good source. Tungsten-filament light bulb does not have these mentioned properties and is not suitable for calibration.

b). No, a white light source such as sunlight will definitely not an appropriate source. White light is a combination of a huge number of wavelengths and will give complex spectra and not a suitable source for calibration. The first basic requirement is not fulfilled by white light.