This video shows 1 major line at top of the partial view of the entire spectrum.
Capturing this video within these 4mb was a daunting task.

40x – Ruthenium metal powder on a piece of white paper for contrast. Obviously, the individual metal particles can only be seen with the microscope.

15x – A minute amount of 995 pure Ruthenium metal powder on the graphite pad used for the video.

40x – One of a few, very small, mostly melted fragments of Ruthenium metal after being subjected to a prolonged period of time of  5000+F heat of the electric arc.
A few of the tiny Ru metal beads can also be seen that did not melt/merge to form a larger piece of metal.

10x – This picture illustrates a much larger amount of the Ruthenium metal powder, which was subjected to a significantly longer exposure to the electrode’s arc. The very high and protracted heat almost completely disintegrated the graphite pad.

20x – This magnified view of the preceding image better illustrates the incomplete melt.
These last 2 images are provided only to give a little more definition as to what Ru looks like.