It is native to North America, Mexico and Central America, and it is NOT venomous. The Red-bellied black snake (Pseudechis porphyriacus) is considerably larger, and can reach 1.5 to 2.5m in length. It is native to Eastern Australia and is venomous.
Emission of Light. An overview of light emission. Light can be produced by matter which is in an excited state and as it will be shown excitation can come from a variety of sources. The atoms and molecules that make up matter typically emit light at characteristic energies. The light emission can be spontaneous or stimulated.
An emission spectrum is the electromagnetic radiation (EMR), such as visible light, a substance emits. Every element gives off a unique fingerprint of light, so analyzing the frequencies of this light helps identify the chemical that generated it.bsorption Spectra. It is important to distinguish between emission and absorption spectra. In an absorption spectrum, some wavelengths of light are absorbed as they pass through a gas, forming a pattern of dark lines against a continuous background.