Access to eBooks is limited to institutions that have purchased or currently subscribe to the SPIE eBooks program. eBooks are not available via an individual subscription. SPIE books (print and digital) may be purchased individually on SPIE.Org.

Contact your librarian to recommend SPIE eBooks for your organization.
Chapter 15:
Does Invisible Light Exist?
The discovery of “invisible light” by William Herschel in 1800 not only incited contradictory responses from his peers, but caused Herschel to doubt its significance. Two decades earlier, the tenor of the times was such that his discovery of a new planet made considerable impact. But now scientists had become accustomed to the revelations of additional discoveries. The concepts of science were undergoing frequent revision. Nevertheless, invisible light seemed a contradiction of terms.
Online access to SPIE eBooks is limited to subscribing institutions.

Back to Top