9
= 9
{scope}
\b[Original question.]
Describe the decomposition of light by a prism. What are Fraunhofer's lines ; what is their use in the construction of optical instruments, and what is the physical explanation of their existence ?
= 9
{scope}
\b[Original question.]
Describe the decomposition of light by a prism. What are Fraunhofer's lines ; what is their use in the construction of optical instruments, and what is the physical explanation of their existence ?