absorption spectrum

n=2


a: absorption spectrum ~
b: fingerprint

What:

"An absorption spectrum is like a fingerprint; every element and compound will absorb one or more wavelengths of light. By determining *which* wavelengths are missing, the astronomer can deduce it's being absorbed by a specific element or molecule."


Useful?
Writer: quantumclaustrophobe
LCC:
Where:
Date: Dec 2 2014 7:14 PM



a: absorption spectrum ~
b: a jigsaw puzzle with a few missing pieces

What:

"In 1814 Joseph von Fraunhofer, a German optician, used a spectroscope to produce a spectrum of the Sun. He noticed that the spectrum contained a number of dark lines on a continuous spectrum. Fraunhofer had no explanation for these dark lines, but it was later discovered that they had resulted from sunlight passing through cooler gases in the Sun's atmosphere. A dark-line spectrum, called an absorption spectrum, is like a jigsaw puzzle with a few missing pieces. All stars show this type of spectrum. "


Useful?
Writer: Not Stated
LCC:
Where:
Date: Dec 2 2014 7:17 PM



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