That the spectrum of sunlight is crossed by dark lines was observed for the first time by William Hyde Wollaston in 1802. In celebration of the 150th anniversary of this important discovery, Wollaston's announcement is here reproduced.
Topics
News and events
This content is only available via PDF.
© 1952 American Association of Physics Teachers.
1952
American Association of Physics Teachers
AAPT members receive access to the American Journal of Physics and The Physics Teacher as a member benefit. To learn more about this member benefit and becoming an AAPT member, visit the Joining AAPT page.