Why do different gases emit different colors of light?
It is because atoms or molecules at high energy levels move their electrons on the orbit closest to the nucleus. At this point, it has the least energy and is relatively stable. When atoms are excited by external factors, electrons absorb a certain amount of energy and jump into other high-energy orbitals. At this time, electrons become unstable and can spontaneously jump to low-energy orbitals, emitting a photon that forms visible light that can be observed by the naked eye

The product includes:
1. One set of base
2. Five rare gases (helium neon argon krypton xenon)