Definition: Spectroscopy is a branch of physics that studies the properties of light by measuring its spectral features, such as wavelengths, intensities, and colors. It involves analyzing a sample of matter using laser beams to obtain a spectrum or pattern of intensity distributions, which can be visualized and analyzed in ways similar to traditional spectroscopy methods. Spectroscopic techniques involve multiple sources of light (such as lasers) that interact with the sample under study. The interaction allows for the measurement of wavelengths, intensities, and colors through the laser beams' properties. This leads to a measurable signal when the incident light is detected by a detector array or other optical means. In spectroscopy, "spectroscopic technique" refers to the process of applying spectroscopy techniques to analyze matter under study, resulting in a measurable signal. The term "spectral feature" describes specific wavelengths, intensities, and colors that are observed in a sample. Spectroscopy is distinct from other types of physical analysis that focus on the behavior of light, such as traditional spectroscopy methods like visible light or infrared (IR) spectroscopy, which use optical principles to analyze the properties of light. Spectral features provide information about the structure and composition of matter under study, whereas spectroscopic techniques directly observe the behavior of light in a sample. The detailed definition of "spectroscopy" includes a broad range of topics related to light and matter. It is also considered part of quantum physics, focusing on the properties of light at specific wavelengths and intensities (quantum states). Spectroscopy can be used to analyze materials, such as metals or gases, where the intensity of light varies with their temperature, density, or composition, offering insights into the material's behavior under specific conditions. In summary, spectroscopy is a specialized branch of physics that uses laser beams to measure the properties of light and its spectrum or pattern, similar to traditional spectroscopic techniques. It encompasses a broader range of topics related to light, including quantum physics, materials science, and environmental science.

spectroscopy