By tilting the CD-ROM further so sunlight just skims its surface, dark absorption lines may be seen crossing the spectrum.
(dark absorption lines; may be seen; T:By tilting the CD-ROM further so sunlight just skims its surface) (dark absorption lines; crossing; the spectrum)
dark absorption lines dark absorption lines
may be seen crossing
T:By tilting the CD-ROM further so sunlight just skims its surface
the spectrum