Recent content by NitroNinja

Homework Statement Okay, I'll start off with a summary of the practical. And then the question. The aim was to measure the wavelength of yellow light from a sodium vapour lamp, using a telescope and a diffraction grating of 300 lines per mm. The instructions tell us to prepare the apparatus, so...

This is a part of a homework question, and a concept that is expected to be understood. "Why do you think discharge tubes have a narrow waist?". I was thinking about attempting the question like this: Discharge tubes are mainly used to view spectra. And hence a thin tube, will allow a thin...