â¢ Graduate Medical Education (GME) for physicians. Inpatient care units at a VAMC can be categorized into two general types; from lowest to highest patient acuity: Medical / Surgical (M/S) and Intensive Care Unit (ICU).
That means that the different types of metals used in the stars each have a characteristic color. Here are some of the metals and specific compounds that are typically used in fireworks to produce different colors: Red: strontium (strontium carbonate, SrCO3), for intense reds and lithium (lithium carbonate, Li2CO3, or lithium chloride, LiCl) for medium reds. Orange: calcium (calcium chloride, CaCl2)
Likewise, pyrotechnic experts use incandescence to create brilliant white fireworks, but rely on the phenomenon of gas excitation to create the dance of colors we expect from fireworks. In addition, neon, mercury, and sodium lights take advantage of gas excitations. Lightning over a farmhouse, left. Above right, lightning dances across the charged skies over Sydney Harbour and the Harbour Bridge. Electrical excitation is at play in both the lightning and the bridge, which is lit with vapor lamps.