The science of stellar spectroscopy was pioneered by Joseph von Fraunhofer and Angelo Secchi. By evaluating the spectra of stars including Sirius into the Sunlight, they found discrepancies in the power and quantity of their absorption lines—the dark traces in stellar spectra because of the atmosphere's absorption of particular frequencies. https://pantip256637025.look4blog.com/75578773/examine-this-report-on-hotel