Questions:

1. Why is it that one can see all the different colors at once? Is what one observes in this experiment any different than what one would see if one observed a single, isolated atom? Explain.

2. The bright yellow line in the Na spectrum is actually two very close lines (589.6 nm and 589.0 nm). In our experiment, what do calculate the angular separation to be, and does the diffraction grating have sufficient spectral resolution to make the separation between the two lines apparent?