The Discovery Center Museum in Rockford is teaching visitors how to make a sundial, an ancient tool used to tell time using the sun.
Abstract: One of the objectives of solving electromagnetic inverse scattering problems is to extract information about an unknown under-test object from the scattered waveform. One approach to solving ...
Bill Rollins Jr., 97, wrote and self-published 'Trisecting an Angle,' to try to share his solution with the world.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback