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
Contact your librarian to recommend SPIE eBooks for your organization.
In Ch. 2, we discussed briefly the incomplete gamma function G(a,x). This is encountered in physical problems only infrequently. However, there is a special case, called the exponential integral, which is very useful and has been used widely in antenna theory and in astrophysics.
Online access to SPIE eBooks is limited to subscribing institutions.