CHEM 101 Lecture Notes - Lecture 2: Incandescent Light Bulb, Spectroscopy, Emission Spectrum
21 Mar 2016
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Argon: green 515nm, red 580nm. Helium: bright yellow 590nm, thin red 670nm, bright green 500nm, faded blue 470nm, purple 450nm, dark green 490nm. Dark red 600nm: neon gas. This indicates how much energy is being absorbed and used. Emission is the amount of energy released in terms of electromagnetic radiation when an atom of a particular element changes energy levels from a high energy level to a lower energy level. It is measured by the color because each color represents a different distance. Each element has a different emission spectrum because each element has different amounts of energy that can be released. The bohr model indicates that for each atom there is a positively charged and very dense nucleus that is surrounded by negatively charged electrons rotating around the nucleus in structured orbitals. Today, a modified version of this is used to show how atoms work.
