Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
One doesn't simply pass sunlight through a prism to demonstrate the
Fraunhofer absorption spectrum of the Sun. That works for Newton's
demonstration of the phenomenon of colors, but for the narrow lines
one needs lenses to collimate and focus the radiation, and an
accurately aligned entrance slit as long as the desired spectrum is