Emission spectrum of hydrogen

Emission spectrum of hydrogen

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Caption: Emission spectrum of hydrogen. When atoms of an element are excited (e.g. by heating), they return to their state of lowest energy by emitting radia- tion at specific wavelengths. If this radiation is passed through a spectrometer, a spectrum is prod- uced which displays the element's characteristic emission "lines". The lines are a unique "finger- print" of an element. Hydrogen's predominant lines are at 6563 (red), 4861 (cyan) & 4340 angstroms (blue). The many fainter lines are not visible in this photo. Hydrogen atoms can exist in a number of energy states, producing 4 different spectra. This example is known as a "Balmer spectrum".

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Keywords: atomic structure, balmer spectrum of hydrogen, chemical, chemistry, element, elements, emission - hydrogen, emission spectrum, hydrogen, of hydroge, of hydrogen, particle physics, spectroscopy, spectrum, spectrum of

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