لخّصلي

The compositions of distant stars, intergalactic molecules, and even the initial abundances of elements before the first stars formed can be determined by optical, radio, and X-ray spectroscopy.Therefore, the gas will be identified from its atomic spectrum, which will be one of the types of noble gases.Optical spectroscopy is routinely used to determine the chemical composition of a substance and determine its physical structure .The basic premise of spectroscopy is that different materials emit and react to different wavelengths (colors) of light in different ways, depending on properties such as temperature and composition.

The compositions of distant stars, intergalactic molecules, and even the initial abundances of elements before the first stars formed can be determined by optical, radio, and X-ray spectroscopy. Optical spectroscopy is routinely used to determine the chemical composition of a substance and determine its physical structure .The basic premise of spectroscopy is that different materials emit and react to different wavelengths (colors) of light in different ways, depending on properties such as temperature and composition. So, we can use spectra of detailed color patterns to figure out things like how hot something is and exactly what elements and compounds it's made of, without directly sampling them . The first step in spectroscopy is to separate light into its component colors to form a spectrum. You can do this using a glass prism, or a device called a diffraction grating. Types of spectra: Absorption spectrum that appears to be a continuous spectrum, but with some colors noticeably fainter than others, or almost missing. These lost colors appear as black lines known as absorption lines. Absorption lines are produced when starlight passes through a substance such as a dense gas. Some wavelengths are absorbed by atoms and molecules of the gas. They will be used to test the effectiveness of thermal insulation films through their transmission spectra. Since windows are required to ensure natural lighting, solar and thermal insulating window films need to achieve these goals at the same time while maintaining transparency Why does each element have a specific signature? It is about those electrons that move between energy levels, the pattern of the emission spectrum is the opposite of the absorption spectrum. The emission spectrum is mostly dark with bright lines of color known as emission lines, and each atom has a specific pattern of colors that it emits. Therefore, the gas will be identified from its atomic spectrum, which will be one of the types of noble gases.